Melbourne's four-time club champion Clayton Oliver has returned to training with his AFL teammates after an extended period of leave to deal with personal issues.

Oliver's return on Wednesday comes after the ace midfielder battled injuries and medical problems as well as facing questions over his off-field behaviour.

He hadn't trained with teammates since December 18 when he left a team camp in Lorne to deal with medical issues.

"Fundamentally it's just great to have Clayton back," Melbourne's football boss Alan Richardson said.

"And it's great to see him with a smile on his face and feeling better.

"He has done a lot of training himself.

Oliver is yet to return to full training.

"He'll still be doing ball work; but on the side, in the rehab group," Richardson said.

"We'll have to make sure we bring him up to speed from an educational point of view with any of the adjustments we have made to our game plan."

In January, the Demons released a statement from football boss Alan Richardson after Oliver failed to re-join his teammates at pre-season training.

"Clayton has personal issues that he has been dealing with," Richardson said at the time.

"Clayton has been working extremely closely with his personal medical team, and with the support of key club staff, in order to manage these challenges."

Oliver's professionalism was repeatedly questioned in 2023 amid doubts over his future at Melbourne.

The triple All-Australian was restricted to 15 games last season because of a hamstring injury but returned before finals, when the Demons made a second consecutive straight-sets exit.

Oliver was later the subject of trade speculation despite being under contract until 2030 after signing a massive seven-year extension.