Would he be worth a place in our squad going forward? Possibly - probably yes if he can recover his form at his previous club before his injury (a big if).
Would he be worth shattering our wage structure, and completely re-modelling the way the club is run? No.
I doubt it, unless we've seriously shattered our wage structure.
That was some sort of deal based on him being a free transfer, wasn't it? No fee, so the player benefitted.