Career
Nottingham Forest
Warner came through the youth ranks at Nottingham Forest under Frank Clark during the 1993-1994 Premier League season. Despite being touted as "the new Des Walker", Warner struggled to break into the first team and spent time on loan with Grimsby Town during the 1995-1996 season who were managed by Warner"s former team mate Brian Laws. He played 3 times for Grimsby before returning to the City Ground in April 1996.
Rotherham United
Following a two-month loan spell with Rotherham United at the start of the 1997-1998 season, Warner signed for the club on a free transfer in November 1997.
Warner was released by United in the summer of 2000 after spending three seasons with The Millers. Warner although not officially retiring didn"t return to football following his release from Rotherham and since then he has worked for British Telecom.