The pair's working relationship appears to have completely broken down this season, with the Blancos skipper currently playing serving as goalkeeping understudy to Diego Lopez
Mourinho's relationship with the goalkeeper appears to have broken down this season, with the latter is currently kicking his heels on the Blancos bench having failed to regain his place in the starting line-up from Diego Lopez after a two-month spell out injured.
Michel is quick to concede that Lopez is a fine shot-stopper in his own right but is aghast that relations between coach and captain have imploded to such an extent.
"It would be impossible to see this case elsewhere," the current Olympiakos boss is quoted as saying by Marca. "What is happening with Casillas would not be possible at Manchester City, AC Milan or Juventus.
"I cannot see [Juventus captain and goalkeeper Gianluigi] Buffon going through what is happening to Iker. Diego Lopez is outstanding, but I am talking about other things: controversies have been created outside of the game."
Meanwhile, Michel also expressed his disappointment over the fact that no Spanish coaches are being put forward as a possible replacement for Mourinho, who is expected to part company with Madrid this summer.
"We have a habit of wanting the coach that does us most harm," he mused. "Before the Champions League [semi-final] tie with Borussia [Dortmund], nobody was talking about [BVB coach Jurgen] Klopp.
"In Spain, we would not allow a former footballer like [Roberto] Mancini, who had just retired from the game, to train the top teams.
"We are extremely kind to the people from outside but we do not allow those at home to rise up. We have also seen what [Sir Alex] Ferguson has done [at Manchester United] but that is unthinkable in Spain."
Michel, who was capped 66 times by Spain, has previously coached the Real Madrid B team.