The Blues legend hung up the boots after a short spell with the Rams last term.
Mount told chelseafc.com: "I was lucky to play with Ash last season at Derby and he's such a legend at Chelsea.
"He's got so much experience in the game and I learnt so much off him. This season, I'd probably say either Willian or N'Golo [Kante]. I'm fortunate to play alongside some world-class players.
"I think the best trainer should go to Mateo Kovacic. He's always on it every day in training, always wants to win no matter what and is very competitive."