To be honest, i can't see us signing anyone else, even with Burns' injury.
We have Delap and Hirst as our main #9's, and we have an abundance of attacking players (Hutch, J Clarke, Szmodics, Broadhead, Chaplin, Ensisco, Billie jean)
Can't see any decent #9's wanting to come in and be 3rd choice (unless it's a decent kid, or journeyman)
We have 7 attackers (plus Burns) for 3 places, we have 5 CM's, 3 Rb's, 4 CB's...LB seems to be the only position we are light in numbers, but can't see Leif being ousted unless he gets an injury.
That's not to say we can't get any improvements. For me, CM is probably our weakest area - As others have mentioned, Morsy is slowly starting to show his age, Phillips hasn't done too much, Cajuste can't last 70 minutes, and Luongo is nowhere near Prem standard. Taylor is the only one, in my opinion, who can do a decent job, but still think he's more a #10.
Obviously, this is all dependent whether we ship any players out - if any leave, then that position would have to be filled.