Doc Rivers confirmed on Wednesday that the Celtics are interested in free agent center Dikembe Mutombo, but he also predicted he would return to Houston.

Asked if he had talked with Mutombo, Rivers replied, "Always. He's a good friend. He's going to come back. I talked to him last week - he will come back.

"We're over the [salary] cap so it's tough for us to do a lot of stuff, but we're looking at everybody."