The former Wolverhampton left Molineux in 2002 after being released by then manager Dave Jones.
Slater has attracted interest from League One rivals Port Vale as well as Championship side Sheffield Wednesday but reports suggest that Crewe have talked to manager Charlie Blakemore.
Chasetown are prepaired to let the player leave for nothing but would slap a 50% sell on fee as the club would not stand in the way of the player and his chance to play in the Football League.