Conuicao, 50, was brought in to replace Paulo Fonseca in the short term in December, but failed to deliver European football.
The Portuguese manager now seems to be leaving as soon as his contract ends in July and AC Milan still has to call a replacement.
According to the Italian outlet La Gazzetta Dello Sport, ex-Bologna and Juventus Motta manager, 42, is now the leading candidate to replace him.
Motta was fired by Juve in March after he did not replicate Bologna to the Champions League for the first time in their history in their history in their history in 2023-24.