Tyson Fury has warned Anthony Joshua about losing muscle and changing his style for his rematch against Andy Ruiz Jr.

After his shock defeat at Madison Square Garden on June 1, Joshua has the chance to win back his titles as he faces Ruiz in Saudi Arabia on December 7.

During his press tour last week, Joshua revealed his trimmer physique and said his training so far has been more “boxing focused”.

But Fury is adamant that Joshua should not try to work on a new fighting style to beat Ruiz.