Carlisle will hope that Dean Henderson becomes Manchester United's number one goalkeeper, as they reportedly profit each time he plays.
The 23-year-old joined United from the Cumbrian outfit in 2011 when he was just 14-years-old.
Henderson is number two at Old Trafford to David de Gea and has made 13 appearances this season - mostly in cup competitions.
The Sun have now reported that each time Henderson plays, the League Two outfit pick up £10,000 on the back of the deal they made with United when he was 14.
Until this season, the goalkeeper had not made a senior appearance for the club.
Henderson spent the last two campaigns at Sheffield United, after previous stints with Stockport, Grimsby and Shrewsbury.
Carlisle did not receive any funds for appearances he made while he was away on loan.
Henderson impressed during the Blades' promotion campaign in 2018/19, and then helping them to a top-ten finish in their first season in the Premier League.
As a reward, he jumped Sergio Romero in the pecking order at Old Trafford to become De Gea's deputy.
However, the goalkeeper is becoming increasingly frustrated at having to play second-fiddle to the veteran Spaniard.
The 23-year-old has been linked with a move away from the club in the summer in his search for regular football.
However his manager Ole Gunnar Solskjaer has said recently that it is becoming 'increasingly harder' to leave him out.
He said: 'It's about your performances and what you give to the team. It was a conscious decision to bring Dean back to have real competition in and Dean has made it harder and harder for me to leave him out because whenever he plays he does really well.
'It's not about who's got the most trophies, it is about what you give to the team here and now, if you are right-back, left-back, left wing, right wing.'