If De Gea keeps improving like that and we can keep Vidič healthy, our defense next year will be immense and I've little to no doubt we'll have a better defense than any other team in the league, and one of the best ones in Europe again.Vidic really really does make a huge difference to the confidence of the defense...he really is immense for us. Also, I do think we will soon have the best goal keeper in the world. DDG has come on leaps and bounds this season and is really really looking the part.
Rafael has also greatly improved, Jones and Smalling are just going to keep getting better as well, and Evans has well established himself as a more than reliable CB option.