The Lions' offseason program continues this week with organized team activities starting Tuesday.

OTAs will consist of three practices each of the next three weeks — May 26-28, June 2-4 and June 8-11.

Most of the players should be in attendance during OTAs, but strong safety James Ihedigbo is the most likely to be absent. Ihedigbo is in the midst of a contract dispute, and his agent said last month that he wouldn't participate in voluntary workouts without a new deal.

Coach Jim Caldwell said he wants Ihedigbo to rejoin the team "pronto," but he's likely the only player who will miss OTAs because of a contract issue.

Players who could miss them because of injury are offensive tackle LaAdrian Waddle, who underwent knee surgery in December, and running back Joique Bell, who had minor surgeries on his Achilles tendon and knee in January.

One focus of OTAs is seeing how the rookies handle themselves with the veterans. Position battles won't truly begin until training camp, but energy and effort can be positive factors for players hoping to make the team.

Ten players to watch this Tuesday through Thursday:

RB Ameer Abdullah

Abdullah is still learning the Lions' scheme, so the second-round pick likely won't be doing any first-team work on offense. But how much he does on special teams will be telling as the Lions want to see what he's capable of as a punt or kickoff returner.

DT Haloti Ngata

With Ndamukong Suh, Nick Fairley and C.J. Mosley gone, the Lions' defensive interior will look much different. OTAs will be Ngata's first chance to compete against his new teammates after nine years in Baltimore. How much the 31-year-old has left in the tank won't be evident until the season, but the Lions hope to see some flashes.

TE Eric Ebron

He said recently that he's a new man, and shaving off his Mohawk certainly makes him look different. Now, he has to show more confidence on the field. Catching everything that comes his direction would be a good step for Ebron.

OLB Kyle Van Noy

The 2014 second-round pick will likely be on the second team to begin OTAs, and he'll need to spend this offseason developing after missing half of his rookie season due to core muscle surgery. Showing some pass rush ability the next few weeks could go a long way to him earning playing time.

OL Manny Ramirez

He'll probably be a backup to start, but could have some first-team opportunities at center or left guard. The 32-year-old said he wants to start, and he'll have a chance to step in as the leader of a young offensive line.

DE Larry Webster

With George Johnson gone, the Lions will need to find someone to provide his production on the edge. Webster didn't play a game as a rookie, so he enters OTAs as a relative unknown. A few splash plays or good performances in one-on-ones would be a reason for optimism.

S Isa Abdul-Quddus

Whenever James Ihedigbo returns, he should slot into the starting lineup, but Abdul-Quddus or Don Carey will likely fill in while he's gone. Abdul-Quddus was solid in three starts at the beginning of 2014, and the Lions like what he adds on defense and special teams.

CB Nevin Lawson

Lawson's rookie year ended in Week 2, so he still has plenty of learning to do. He'll have a chance to compete for nickel duties. If he shows speed he had a year ago, Lawson can help himself in OTAs.

WR Ryan Broyles

Broyles said he was fully healthy during 2014, which means the coaches didn't see enough to play him. Now entering his fourth season, Broyles will have to prove he can be a reliable threat, and OTAs are the first chance for him to impress.

OL Torrian Wilson

The Lions are giving the 6-foot-3, 310-pound Wilson, a three-year starter at left tackle for Central Florida, a shot to play guard as an undrafted rookie. He'll have plenty of competition, but if he can look comfortable on the inside, he'll have a better chance of making the team.