Indiana is optimistic about quarterback Kurtis Rourke’s progress as he recovers from a thumb injury that required surgery last week, coach Curt Cignetti told reporters Monday.Cignetti said the redshirt senior has been “throwing the past few days.”The 13th-ranked and unbeaten Hoosiers (8-0, 5-0 Big Ten) are hopeful that Rourke can return to play at Michigan State on Saturday, ESPN reported Monday.Rourke was injured in the second quarter of a 56-7 rout of Nebraska on Oct. 19, when his throwing hand struck the helmet of a Cornhuskers player. He did not return to the game, with Tayven Jackson taking over and finishing the blowout victory.