Liverpool have completed the sale of youth-team player Rafael Camacho to Sporting Clube de Portugal for £5m.
The 19-year-old, who made his first-team debut last season with substitute appearances in the FA Cup at Wolves and at home to Crystal Palace, had turned down the offer of a new contract.
He has secured a return to his homeland but as part of the move Liverpool negotiated £2m-worth of add-ons, dependent on league and European success, with a 20 per cent sell-on clause and a buy-back option.
Camacho, who joined on a free transfer from Manchester City in 2015 despite also having a trial at Manchester United, is understood to have verbally agreed to his new contract in January on the proviso he could be loaned out but a temporary move never materialised.