I personally am not pining for Gana himself as much as I think a player LIKE Gana would really help us as it would allow our CMs to push up more. Like @BlueToff said I hope Gblammo can be the replacement but we don't even know if he'll even play again with how quiet the club is with him. If we could get in a player like Gana or even Gana himself on a loan I think it could really help us in the immediate. Also I know Gana liked to push forward but he was excellent in breaking up the plays of the opposition. If we could get someone to just sit back there and do that I think we'd have more freedom to push forward more.
I guess with Khedira it would just be his task to sit there and let everyone else do the running.
But honestly, our issue comes from not being able to keep the ball well enough in the final third, hardly ever camp on a team's box for a sustained spell of possession.
IMO we're in much more need of a ball-carrier than a holding player.