And Bacca is keen to return rather than joining back up with his parent club in Italy.
"I feel good and I'd like to stay in Spain," Bacca told Fox Sports Radio Colombia.
"We're waiting, I have a contract with Milan and I respect it. I need to wait until I can go back and talk to them about the situation and what they want from me. Then I'll say what I want and we'll make the decision."
Bacca added that while he will report to training with Milan, the prospect of going head-to-head with Juventus' new signing after years of taking him on with Sevilla and Villarreal is not a likely one.
"I will return with hope as always, with the desire and optimism to do things right. We do not know what will happen, we leave everything in the hands of God," he said.
"I have to present myself at Milan, but I doubt I'll stay in Serie A with [Cristiano] Ronaldo."