Ferguson declared last week he believed this season's squad was the best he'd assembled in 21 years and O'Shea said: "I'm sure that he meant along the lines of potentially it's got the ability to be [the strongest].
"I'd possibly agree with him but it won't matter what's being said now unless we get Doubles, unless we get Trebles. And time will tell for that. But potentially we've got the chance to do that with the attacking flair we've got at the minute, the mix of flair and experience. It's great to be a part of."
On Ferguson's approach this season, O'Shea says the fires are burning as hot as ever.
"You can see the desire and the enthusiasm that he's got when he comes out on to the training pitch - a cold, wet morning in Manchester and he's coming out with a smile on his face. It's a credit to him. With the success he's had he's still really got the bit between his teeth because he sees the potential that this squad has. He's positive about the ability of the players, and some of the football we've been playing this season has backed it up."