I doubt if we want Grosso.Risse on the other hand,could be possible as Blanc(Or was it Gigli?) has flown to England for Alonso.Risse might be a part of the deal too.
If there was a choice between Grosso and Risse,id prefer the former,but i think our potential targets for the LB position are limited,which is why Risse is a good alternative.Plus you can push Risse up the pitch too,as a left winger.He's a good player.I think he just needs a new club to refresh himself.