Mark Thompson outside his Port Melbourne front door. Credit:Justin McManus

AFL legend Mark 'Bomber' Thompson has apologised to the people who have supported him as he faces possible jail time for a string of serious drug crimes.

As he left his Port Melbourne home on his bike at about 4.30pm on Wednesday, a weary looking Thompson expressed regret at disappointing his fans and those who cared about him.

When asked by waiting reporters if he had any comment to make, the 54-year-old said: "just tell them that that I’m sorry that they’ve had to put up with this and put up with me. But hopefully they’ll get through it".

He also told reporters he was feeling "not good" and "pretty down".