I don't think it's as much who he gets in, but how he manages them individually and collectively. Apart from some shite, a lot of his signings have been good, good enough at least to have been able to get out of the league this season. Armstrong is a real piece of gold and if he had been given the service would have scored significantly more goals, but instead Mowbray opted to play different sorts of players rather than the ones we had earlier in the season that were providing him with things to do.
He's let himself down massively on team selection and man management i'd say, and I think this has a large amount to do with our downfall this season. If he can learn from that then we'll have a chance I think, whether they are loan or permanent signings.