'The way he's playing, there's every chance he'll become United's greatest ever player,'. Law said in the Sunday Express.
'It's very difficult to compare him and Bestie in the circumstances because you're going back many, many years.
'But I suppose if Bestie was playing in the current United team, then they'd be on a par.'
He also believes Ronaldo and Rooney could influence the team just as Best and Charlton did in the sixties.
'In our team, we had Bobby Charlton and Bestie,' Law explained.
'And you knew that, even if you weren't playing well, Bobby and Bestie would be able to do something special.
'That's exactly what they've got in the present United team with Ronaldo and Wayne Rooney. They're such a formidable pair.
'United have everything. The way they're going and playing - with Ronaldo and Rooney - they have a great chance of winning the treble.'
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