The OP's XI is probably what I'd go for with the team ATM (assuming Christie gets sold), however, I think we do need to sign players, straight up 1-2 CB's, Edj is too weak and Willi may be too raw to start, we also need a winger or 2, something different to add to our attack, and finally, although Clarke is the best striker in the league, we need another striker to challenge him for an XI place, or to offer another tactical option (move to 4-4-2 or whatever). Hopefully the likes of Garner and Willis will step up from youth team level.
I don't see why people are panicking, we will sign players.