Difficult to find anything online now as it's all about his death, but when he re-signed in the late 90s he received over £100k just to attend an interview with Walter Mitty Goldberg.

He then signed a 5 year contract with a one sided get out option each year (on his side).

He then got paid £1m post tax upfront for the first year of his contract (on the advice of his agent).
He also got 2% of all sells so we had a massive turnover of players, often buying like for like replacements. I remember selling Ships and then buying the donkey Bradbury (??) the next day. Same with Deano at LB and replacing him with a dodgy LB from Israel.

When he left after 6 months he did claim he did so to 'save' the club money, however, i'm struggling to understand that as he had already been paid for year 1 in full.

Later he definitely sued for the remainder of his contract - not sure if he got anywhere, it all went very quiet.

This is the best i can find - says he was paid £750k tax free not £1m

[Link]

Yes big mal was a pale shadow of the great man when he came back