Though used more often in midfield, Greenhoff was more comfortable playing at centre half - due to his talent on the ball and willingness to work hard for the team, he ended up being played in every position for the United first team - including in goal, when Alex Stepney was injured in a game at Birmingham City.
Meskipun lebih sering digunakan di lini tengah, Greenhoff lebih nyaman bermain di pusat lini belakang - karena bakatnya pada bola dan kemauan untuk bekerja keras untuk tim, dia akhirnya dimainkan di setiap posisi untuk tim utama United - termasuk dibawah mistar gawang, ketika Alex Stepney terluka dalam sebuah pertandingan di Birmingham City.