Sounds like a late 60's Disney film starring Kurt Russell and Joe Flynn.
“ROCKNE: Well, boys ... I haven’t a thing to say. Played a great game...all of you. Great game.
(He tries to smile.) I guess we just can’t expect to win ‘em all. (Rockne pauses and says quietly). I’m going to tell you something I’ve kept to myself for years — None of you ever knew Colossus. It was long before your time. But you know what a tradition he is at Notre Dame...
(There is gentle, faraway look in his eyes as he recalls the boy’s words). And the last thing he said to me — “Rock,” he said - “sometime, when the team is up against it — and the breaks are beating the boys — tell them to go out there with all they got and win just one for the Col.
(Knute’s eyes become misty and his voice is unsteady as he finishes). I don’t know where I’ll be then, Rock”, he said - “but I’ll know about it - and I’ll be happy.”