The United boss told reporters: "I don't think that we need to rebuild at all – possibly two players, if possible. It depends of course. If a player came along that we felt met our criteria, I think we'd push the boat out and get him irrespective of how many players we had.
The Red Devils were only confirmed as this season's Premier League winners on Monday after beating Aston Villa 3-0, but Ferguson is already looking towards adding to his team for the new campaign in August.
"Having spoken with the Glazer family [the owners] I think there's every intention we want to kick on, yeah," Ferguson said.
He added, "It has been fantastic [gaining extra revenue from sponsors] and that's credit to the commercial people, they've done a great job and of course the football team has been [the] platform for that. But they're capitalizing on such a great profile of the club – there's no doubt, worldwide it seems to me to be getting bigger."