[1] McManus was born in Limavady and played for Coleraine before joining English club Coventry City in 1969.
He joined Notts County in the summer of 1972 and played in four matches in 1972–73 as the Magpies finished in 2nd place earning promotion to the Second Division.
[1] He became the regular number one at Meadow Lane making 265 appearances before joining Stoke City in the summer of 1979.
[1] At the Victoria Ground McManus was second choice behind Peter Fox and so spent the 1979–80 out on loan at Lincoln City and did not play at all in 1980–81.
[1] He joined Bradford City in August 1982 where he made 139 appearances in three seasons at Valley Parade.