Leeds United head coach Marcelo Bielsa has donated a reported $2.5m (£1.9m) to former side Newell's Old Boys.
The 63-year-old started both his playing and managerial career with the Argentine side.
The money has helped the club to build a new training facility, which opens next month.
"They are the club that formed me. I received more than what I gave to them. I'm paying a debt to them, not giving them a gift," he said.
"The infrastructures of the institution help the team to prepare well. Two things are important for a team, the quality of the players and the quality of the preparation they receive."
Former Argentina and Chile boss Bielsa has made a good start to his time at Elland Road, winning six and drawing five of his first 12 league games in charge.