Manchester United reportedly face the prospect of paying a further £9m to Sporting Lisbon for Bruno Fernandes in the next few weeks due to various add-ons.
The Red Devils snapped up the Portugal international for a cut-price £42m in the January window and he has already made a huge impact at Old Trafford.
However, Portuguese outlet A Bola claims that United may end up paying closer to £67m when certain clauses are triggered.
The first of those clauses supposedly requires United to pay Sporting £4.5m once Fernandes has made 20 appearances for the club, which he is two short of reaching.
Ole Gunnar Solskjaer's side will pay the same amount if they qualify for next season's Champions League, it is claimed, which they are also on course to achieve.
Speaking during football's three-month hiatus, Sporting president Frederico Varandas suggested that Fernandes's valuation could have plummeted to as low as £18m due to the effects of COVID-19.
