Young is up and coming winger, he will be england regular in a
couple of years time.
when villa signed him for watford, it took Young to be where he
is in a few years remember. Young is beginning to show his class in
villa, so if he does join Man Utd, I am sure he will continue and
may improve further.
As for Tosic, he is unproven and first time playing in
EPL. cant expect him to straight away perform
in his first season.
I expect him to perform in a few years from now, and even then, he
may not be a regular.