4th choice shouldn't mean much. We need one good player when Poulsen and Ekdal leave. We're in 3 competition and all players should be very good so we rotate.
We should be looking for someone who's good with the ball, as we never really had that type of a player.
Among my favs would be Kwadwo (not likely at all since he's better than the most we have) and Poli (young player who wouldn't mind bench much I guess but somebody who can be great in future. He's showing some promise already). Cigarini was good option but he's in Spain now sadly. I don't know...it's hard, many of those who I like wouldn't come to be a back up.
If we're looking to get some winger and a left back and don't have much to spend I'd go for Greco.
Sadly, IMO the BEST option for us was Ekdal. Too bad we fucked it up.