WATCH: USMNT's Tim Weah Scores, Assists Off Bench for Celtic

On loan from PSG, the young American forward, making an immediate impact as a substitute, grabbed an assist and another goal for the Scottish club.

It's been quite the start for USMNT's Tim Weah and his temporary move with Scottish club Celtic.

On loan from PSG, the young American forward made an immediate impact as a substitute on Sunday, as he grabbed an assist and a goal against St. Johnstone, helping Brendan Rodgers's side solidify first place in the Scottish Premiership. 

Weah came on the 74th minute when the score was still 0-0, and four minutes later, the 18-year-old attacker caused havoc from the left and provided a great ball for James Forrest, who opened the scoring. 

His day wasn't done ,as in the 89th minute, roles were basically reversed as Weah entered the box, picked up the ball from the left and grabbed the winner. 

It was his third goal for Celtic since joining the club in the January transfer window on a six-month loan.