cost wise, he is probably our biggest transfer flop of all time. Arthur had comparable fee, but not even close with salary and the fee was inflated with the shady formula of exchange. Here we are talking about 84,5m fee and 60m in wages flushed down the toilet and this is if we actually manage to sell him this summer, if not we will pay him extra 20m in wages next season. So his total cost could be around 144,5m total.
124,5m after this season with 55 goals scored, lets assume he scores 5 more and hits 60 goals total, it will be 2,05m for each of his goal.