Coming in our 1-1 draw with the Whites at Tottenham Hotspur Stadium earlier this month, the forward opened the scoring with the effort on 51 minutes.
From a corner on the right, Pedro Porro lofted the dead ball into the middle of the area but it was headed away by Leeds' Luka Bijol. His clearance only went as far as Mathys though who was primed to strike on the edge of the box.
Having already scored against Leeds this season, the Frenchman stopped the ball dead with his first touch before taking one step and whipping the ball deliciously into the top right-hand corner of the net.
Such was the quality of the strike, it has just about taken top spot in our Goal of the Month vote. Mathys' strike took 42 per cent of the vote with Conor Gallagher's effort at Aston Villa taking 36 per cent. Toko Koga's long-range winner against Brighton & Hove Albion winner came third with 10 per cent of the vote.
Watch Tel's stunner against Leeds United