Speaking after the Blues' 2-0 victory over Brighton on Boxing Day, the 48-year-old said: "I don't speak about players from other teams' card.
"I must be honest, it's not right to talk about a player of another team. Especially if you try to link this player with us.
"But Arturo is a fantastic player, I have a great respect for Arturo, and we spent many years in Juventus together.
"If we go to war, I'd always want him with me."
Vidal's contract at the Allianz Arena expires in 2019, and Bayern could cash in on the £53million rated midfielder.