This is not a half competent team, it's a good team and they're missing lots of important players. Garcia has done a great job with this Roma side, this might be their year if they keep Benatia and Strootman. Astori at the back is also a good signing.
If Garcia manages to win the Serie A with Roma, after having won the French League with Lille, next stop will be a big Premier League club, i guess.
For those of you complaining about the defensive mistakes, you should know that van Gaal will never sacrifice his plan to create chances and attacking moves.This is one of the things he has common with sir Alex. The main goal will always be to get the best out of Mata and the two men in front of him, even if it makes us look kind of vulnerable at the back.