Speaking to BBC, the Blues boss said, "We had a chat last week, he rang me, but I was in the middle of talking to Poch so I was torn. There's not many people you tell Poch to wait for but I did say to him it was Sir Alex. He calls me from time to time so I wasn't surprised.
"Anything he says to me I always take with such pride. He is a legend of the game and someone whose opinion I value and he has a love of America. We talked a little bit about that, a little bit about legacy, a little bit about leaving at the top. So there were wise words from him. I'm sure it won't be the last phone call I get from him this season."