Was the Al Jazira contract with Mancini himself or his Ltd company?I don't think the motive needs to be proven because the rules simply say you've got to disclose all remuneration to the PL. The bit the PL would need to prove would be "was this 1.7m a year from Al Jazira actually remuneration for being Manchester City manager?".
How would you prove that? I suppose you'd want to -
a) Show how ludicrously low Mancini's official salary was compared to Hughes, Pellegrini and other managers in the PL in 2009.
b) Show a clear flow of payments from City to Al Jazira to Mancini.
c) Show Mancini never actually went to Al Jazira to do the work he was being paid for.
d) Show how paying Mancini via a tax haven saved City enough money to be important. For Mancini to take home an extra £1.7m a year would have cost City about another £4m+ p/a if paid in the UK.
However, to do that you'd need a lot of information from Al Jazira like bank records, and Mancini's travel schedule and I don't think the PL can access that.
If it’s the latter, Mancini wouldn’t have had to attend at all, as long as someone attended on behalf of or from of his company