While I reckon he can spot a player, detractors will point to Kone, Alcaraz and Traore - however all managers sign duds.Defo. It adds into the mix if he's the right person to be spending money afforded this summer.
He's been good in the transfer market so far so I'd be inclined to say give him the chance, if it doesn't work out then chances are he's signed good players that any further manager can work with.
Look at Lukaku, Deulofeu, McCarthy, Robles and Barry for example.