According to this list (2013 Transfer List from CBS), here is who can play immediately (not sure if all are 5th year senior or not):
Jeremy Adams, 6-4, SG, Jr., Colorado (can play immediately)
Paris Bennett, 6-6, F, RS Jr., George Mason (can play immediately)
Kevin Berardini, 6-0, G, Sr., Illinois (can play immediately)
Josh Davis, 6-8, PF, Jr., Tulane (can play immediately)
Lasan Kromah, 6-5, G, Sr., George Washington (can play immediately)
David Pellom, 6-8, F, Sr., George Washington (can play immediately)
Allen Roberts, 6-3, G, Jr., Miami (Ohio) (can play immediately)
Tyler Sugiyama, 5-10, PG, RS Jr., USC (can play immediately)
And here are the players who will be graduating and transferring, and most likely able to play immediately:
Antonio Barton, 6-2, G, Jr., Memphis (will graduate)
Tarik Black, 6-9, PF, Jr., Memphis (likely will graduate)
Dadrian Collins, 6-7, F, Jr., Howard (will graduate)
Osas Ebmomwani, 6-11, C, Jr., Lamar (will graduate)
Reggie Groves, 6-2, SG, Jr., Canisius (will graduate)
Moussa Gueye, 7-0, C, Jr., Alabama (will graduate)
Sandi Marcius, 6-9, C, Jr., Purdue (likely graduate)
Errick Peck, 6-6, F, Sr., Cornell (will graduate)
Vertrail Vaughns, 6-2, G, Jr., George Mason (will graduate)
Lonnie Watson, 6-4, SG, RS Soph., Cal State Northridge (will graduate)
Interesting collection of talent there. Wonder who we are targeting.