MINNEAPOLIS -- The Twins have consistently said there is no timetable for when or if Justin Morneau might return to the team this season. But it's looking less likely that a return will come anytime in the very near future.

Morneau was not at Target Field working out with the team on Tuesday, and Twins manager Ron Gardenhire said the first baseman won't be back at the ballpark until at least Friday.

"The doctors told him to stay home," Gardenhire said. "He's not coming in until Friday. The doctors told him to stay away."

Morneau hasn't played since suffering a concussion on July 7, when he was accidentally kneed in the head during a slide into second base in Toronto. When he last spoke with reporters about a week ago, right before the Twins left on their most recent road trip, Morneau said he still had yet to experience a day without any lingering symptoms from the concussion.

While Morneau won't be working out with the team this week during its series against the Tigers, Gardenhire insisted that it wasn't a setback for the first baseman.

"No setback," Gardenhire said. "It's doctors' protocol."

Morneau had been working out at Target Field recently, and during the team's last homestand -- which was over a week ago -- he was out on the field taking early batting practice, playing catch with some teammates and sitting in the Twins' dugout to watch a couple of games.

But this week, Morneau will spend time at home.

"He's following everything the doctors say," Gardenhire said. "He does his cardio work, the whole package, his workouts and he's following doctors' orders and doing exactly what they want him to do. There you have it."

Thome: Manny sure to have impact on race

MINNEAPOLIS -- Jim Thome has spent quite a few years of his career playing alongside Manny Ramirez, from the early years of their career together in Cleveland to becoming teammates again on the Dodgers during the final month of the 2009 season.

So Thome is well aware of the impact that Ramirez can have on a club, and it's why he doesn't doubt that Ramirez will provide a lift to his newest team -- the White Sox.

"Any time you get a Manny Ramirez on your team, sure it definitely sparks energy," Thome said. "You get a guy in the middle of the lineup that can play, that can hit. But as far as [the Twins are] concerned, we have to focus on what we need to focus on. If we continue to do what we have done, that won't mean a whole lot. That's what we're hoping."

Ramirez joined the White Sox for the first time on Tuesday, after he was acquired by Chicago in a straight waiver claim from the Dodgers. Ramirez wasn't in the starting lineup for the White Sox in Cleveland on Tuesday, but his addition to the White Sox for the final month of the season is something that could certainly have an impact in the American League Central. The Twins entered Tuesday leading the White Sox by four games in the division race.

"He's a guy that's produced and been on the big stage quite a bit," Twins manager Ron Gardenhire said of Ramirez. "We know the guy is a force. We just have to see how everything works out with him and how he does for them. He definitely, if he comes in and he's swinging good and he's healthy, he makes them a better baseball team."

While the White Sox have added Ramirez for the stretch run, the Twins have made their own additions of late. In addition to acquiring closer Matt Capps before the July 31 Trade Deadline, the club has added two left-handed relievers in the past week in Randy Flores and Brian Fuentes. And those are significant boosts to a club that had lost two of its lefties to injuries recently.

"They made a move, that's their move. We made a move by getting Flores and Fuentes, and we like the position that we're in," Thome said. "We like it a little better."

The Twins and White Sox have just three head-to-head contests remaining between them over the final 30 games of the season. Those will take place in Chicago on Sept. 14-16, and it will be the only time that the Twins will actually face Ramirez.

Still, there is a sense that things certainly got a little more interesting for both teams in this race now that Ramirez is involved.

"No question, [getting Manny] adds to the spark of the division," Thome said. "When Manny Ramirez goes to any team, it's definitely going to raise the intensity to any club and especially when you are first and second in the division."

Twins to call up Morales, Plouffe

MINNEAPOLIS -- Wednesday is the first day that Major League rosters can expand for September callups, and manager Ron Gardenhire said on Tuesday that the Twins will likely add a catcher and an infielder at that time.

Minnesota did so after its 4-3 win over Detroit on Tuesday, announcing it will recall catcher Jose Morales and infielder Trevor Plouffe from Triple-A Rochester in time for Wednesday night's game against the Tigers.

The Twins will then wait until the Minor League season ends, which for Triple-A Rochester comes on Labor Day, to add a few more players.

"Maybe one or two position players at most, and maybe one or two pitchers at most," Gardenhire said of the additional callups.

Young subs in for Thome at DH

MINNEAPOLIS -- Jim Thome was still battling some stiffness in his back on Tuesday afternoon, so he was not in the lineup for the series opener against the Tigers.

Instead Delmon Young was slotted as the designated hitter for the contest. It's the first time this season that Young has been the Twins' DH. Jason Repko got the start in left field, and Jason Kubel remained in right.

"Give [Delmon] a chance for a couple days off his legs," manager Ron Gardenhire said, adding that Young got a break during Monday's off-day. "Repko was going to play the outfield somewhere for us. I flipped a coin and Delmon won. Repko, I didn't want to DH him. So this will give Delmon a chance to freshen his legs up."

As for Thome, Gardenhire said the hope is that he'll be ready to return to playing as soon as Wednesday.

"He said he needed another day," Gardenhire said. "So we'll just see how he comes in tomorrow."

Great seats available for Tigers series

MINNEAPOLIS -- The Twins have sold out nearly every game at Target Field this season, but if fans want a chance to see a game at the new ballpark, their best chance might be during the current series against the Tigers.

The Twins have a limited number of seats available for the final two games against the Tigers, as well as some standing-room-only tickets for the series.

For more information on tickets, visit twinsbaseball.com.

Seven Twins prospects land on AFL roster

MINNEAPOLIS -- The rosters for the Arizona Fall League were announced on Tuesday. The seven Twins prospects who were selected to the 2010 Peoria Saguaros roster are: right-handed pitchers David Bromberg, Carlos Gutierrez and Kyle Waldrop, left-handed pitcher Tyler Robertson, first baseman Chris Parmelee and outfielders Joe Benson and Ben Revere.