Loses a fortune in wages? 12 months at say £50k a week more is what worth £2.6 million. After tax/ nic, agents fees etc amounts to around £ 1 million. Huge money to you and me but to a young footballer not that much.
Fast forward 12 months a big fat juicy loyalty payment from Everton which will almost certainly be a feature in his current contract. He will choose where he goes and a major factor in that will be his new wage and a massive signing on fee.His destination may well be to the club bidding the most but there is no guarantee of that for he will hold the whip hand
My guess he would be looking for a wage of at least £200k a week net around or around £2.5 million a year more than he is on now . He will get 5% of the transfer fee, a signing on fee of several millions so yes in the short term it will cost him but in the medium to long term it certainly won't.