Di Matteo replaced the 35-year-old as the Blues manager in March after the Portuguese was sacked, and led the team to their first ever Champions League triumph in May.
"Just because you are sacked does not mean you are not a good coach," he is quoted as saying in the Daily Mail.
"I was pleased he got the Tottenham job. He's a talented and intelligent man."
Tottenham will host Chelsea in the Premier League on Saturday.