With interim boss Rafael Benitez entering the final few games of his temporary tenure, rumours have suggested that the Portuguese will leave Real Madrid at the end of the season in favour of returning to Stamford Bridge.
Ba, who joined the club in January, has revealed that Mourinho is the topic of conversation for a number of players in the Blues dressing room.
"The players at Chelsea are all talking about the situation and telling stories about when Jose was at the club before," Ba told The Sun.
"They are fans of his and love him as a person and as a coach. He is still greatly appreciated here."
Chelsea host Tottenham Hotspur in the Premier League on Wednesday night.