He told manutd.com: "I watched a couple of videos yesterday and they'll be a handful for us," Sir Alex said. "But that's the nature of the Premier League. Hopefully I can pick the right team and get a good result.
"They've really started well this season there's a good degree of experience there. I think Tottenham definitely have a realistic chance of breaking into the top four. Them and City are ahead of the rest, I think... then it's Everton and Aston Villa."