Bonera is standing in for Stefano Pioli as he is forced to self-isolate due to Italian government demands.
Milan defeated Fiorentina on Sunday with Bonera calling the shots and he said: "I'm very happy, but this team has a great coach in charge, and we are all eager to see him again at Milanello.
"There will be time for me."
He added: "Davide has also grown in terms of personality, he strongly believes in his own means. On Kjaer we knew that his experience was useful for this team in a difficult moment like in January. He is a leader, a real man."