Paul Scholes has always been regarded as a top world-class player,both by Manchester United and by England while on international duty.Ferguson persuading him out of retirement was an ingenious plan,to be honest,by the Scotsman,and it proved so with his goal vs. Manchester City in the 1-0 victory.
Scholes should retire from the game once United have reached 20 league titles,like DMF mentioned,but should be careful that he doesn't go out of the game like Zidane...
oh wait.