He scored the winning goal from the penalty spot in 1986 - 87 vs Celtic .
Cooper won league cup medals in 1983 - 84 , 1984 -- 85 , 1986 -- 87 and 1987 - 88 .
Cooper scored the winning goal from the penalty spot in 1986 - 87 vs Celtic .
Cooper won league cup medals in 1983 - 84 , 1984 -- 85 , 1986 -- 87 and 1987 - 88 .