Santana Moss says he has the PERFECT candidate to replace Jay Gruden on the Redskins ... telling TMZ Sports Gregg Williams would KILL IT as head man in D.C.!
Of course, Moss is a bit biased ... he was playing receiver for the 'Skins while Williams was the defensive coordinator there back in the early 2000s.
But Moss says that's exactly why he's pounding the table for Gregg after Gruden's firing Monday ... saying his time with Williams has convinced him the 61-year-old should be Dan Snyder's next hire.