Mills was on Wednesday named as part of a new Football Association commission set up by chairman Greg Dyke to look into ways in which the English game can be improved.
|11/2||England are 11/2 with William Hill to beat Montenegro 2-0
"You ask any player around the world and they would rather win the World Cup than the Champions League," the former Leeds United and Manchester City defender told BBC Radio 5 Live.
"Technically, English players have never been good enough, which is why English players haven't gone abroad.
"England have stood still whilst the rest of the world has moved on.
"Maybe we are getting to the point where there are too many average foreign players coming over to England just because they are cheaper. The Premier League has a responsibility to sort this out."