Err what? Saudi's trying to bolster their Football league by raiding European stars (what the Chinese did many years ago), party also because of their supposedly World Cup bid.
Coincidentally, Chelsea is trying to offload quite a few of their players, some of which are Moslem, and some are deemed as underperforming surplus. AFAIK, they did gave out crazy contract/salary to the players, but as far as the bid themselves is pretty "fair" market wise.
Obviously one of the reason Chelsea is finding it hard to move these players is because of their expected salary, but I don't see how the Saudi decide to gave outrageous salary to these players is something shady, they're basically trying to attract talent to their own league, that most of these players would find unattractive, footballing wise.
And Chelsea is not the only club having to deal with this, the Saudi's are bidding left and right.