The assistant manager should just be good at his job and work well with Mourinho, if it's someone who played for Chelsea before that would be nice yeah, but if anyone can do a better job then not hiring him would be silly. I have my doubts about Materazzi of all people though lol, Lampard as assistant manager though? Not before he retires... Think you are seriously underestimating how much time assistant managers also spends working, should be 100% focused on playing instead.