What do we think of Danijel Pranjic who we agreed personal terms with in January? Bayern blocked the move because they apparently wanted him to play for their 2nd team... He is now available on a free transfer, and I think he would be a great signing. He can play left back, left wing, and central midfielder.
Another interesting player available on a free transfer is Cristian Rodriguez from Porto. Attacking winger who can play on both sides. He was strongly linked with West Brom in January, and he's been linked with both Inter, Spurs, and Gremio since. Did some googling, and it seems we were interested in signing him in 2010, so hopefully he is on Moyes' radar.