The Portuguese, who was sacked last December at Manchester United, spent three years with the Spanish giants between 2010-2013.
Santiago Solari is currently in charge of the Champions League holders, after Julen Lopetegui was sacked earlier this season.
Mourinho, who has been linked with the job, says he will have no qualms coming back.
“To a club that I have been before? If I think the right club, the right structure, the right ambitions, I will have no problem at all.
“I think it’s really a reason of pride when a club where you worked before wanting you back.
“They are the iconic club, I think so you know 13 Champions Leagues,” Mourinho told beIN Sports. SHARE THIS STORY USING ANY OF THE BUTTON BELOW ⬇ PLACE YOUR TEXT ADVERT BELOW ⬇⬇⬇