Young spent four and a half years with Villa before moving to Old Trafford in a deal which saw United pay around £17million.

Warnock expects supporters to understand why England international Young opted to join the Red Devils.

Asensio's Screamer Vs FC Barcelona
Asensio's Screamer Vs FC Barcelona
In one of Real Madrid's most outstanding performances at the Camp Nou, Los Blancos beat FC Barcelona 3-1 in the Spanish Supercup. Real were leading 2-1 after Cristiano Ronaldo's 80th minute goal, but just before the final whistle, we sealed the win with this beautiful Marco Asensio strike.
0 seconds of 43 secondsVolume 0%
Press shift question mark to access a list of keyboard shortcuts
00:00
00:43
00:43
 
keep watching
Watch more Real Madrid videos on OneFootball

He said: "I think Ashley will go down as a modern day great for Villa.

"I wouldn't expect anything less than a good reception for Ashley from our fans.

"He was a great servant to the club but it's not often the Premier League champions and Champions League runners-up want to sign you.

"We're a club who want to progress but Manchester United are at the top and Ashley has aspirations to be a top, top player.

"He has the ability to be one of the best in Europe and I don't think fans can begrudge him that."

Villa are hoping skipper Stiliyan Petrov will be back in contention to face United after he missed the goalless draw at Swansea with a hamstring injury.