Whenever we have a new player I always assume and expect them to be good enough/decent players.
Some surpass my expectations (Ross McCormack, Cameron Jerome, Chops, Bothroyd, Super Kev etc etc), most meet expectations in that they are solid if not spectacular (for example Sawyers, Rino, Allsop more recently, none of whom were terrible but did a job for us) whereas far too many fall well below expectations (Ronnie Moore, Langley, Madine, Turnbull and prove to be huge disappointments)