Roberto has made some top loan signings in Barry, Lukaku and Deulofeu, but Traore always looked very risky and may have been influenced by Romelu's injury problems and his intelligibility for the Chelsea game.
I'm always suspicious when taking a player, even if only on loan, when he's initially carrying an injury. Only have to look at the problems with Andy Carroll for an example of what can go wrong, although I'm not saying Traore's signing was in that category.
Maybe Roberto hasn't had the best of luck with his signings, but Kone injured all season apart from a night he'd rather forget against Stevenage, Alcaraz signed with a long term hamstring problem, Traore signed with a hamstring problem and McGeady signed when well short of fitness doesn't look great.
Against that his other loan signings have been superb and McCarthy really has helped our side adapt to his methods as well as performing consistently well himself.
Moyes lacked ambition and consistently let us down with his lack of signings in the windows. Add to that his negative approach and inability to get his side to perform when it mattered. On the plus side though it's got to be admitted that when he did sign players they were usually excellent signings as Cahill, Jags, Arteta, Pienaar, Stones, Coleman, Baines etc etc in fact there were very few duds like Koldrup probably only 4 or 5.
It has been a real boost with our new boss being so positive and it's given us as new way of playing as well as giving us the confidence to go the Old Trafford and The Emirates and really compete. He's also taken Ross Barkley to the next level and possibly the World Cup. Just a pity his record on signings has been so very mixed.