Mark Crossley started his career at Nottingham Forest in 1987 as a trainee. In his 13 years at Nottingham he made just under 400 appearances as first choice goalkeeper. After being released in 2000 due to financial reasons he ended up playing as an understudy for many international goalkeepers such as, Edwin Van Der Sar. In the past he has been laoned to Manchester United, Millwall, Middlesborough, Stoke City and Fullahm.