dʒˈɛfɹi bɪɡˈæn hɪz pɹəfˈɛʃənəl plˈeɪɪŋ kɚɹˈɪɹ wɪð lˈɪnfiːld, fˈɑːloʊɪŋ ɐ spˈɛl ɪnðə mˈæntʃɛstɚ juːnˈaɪɾᵻd jˈuːθ tˈiːm, ænd ˈɔːlsoʊ plˈeɪd fɔːɹ ˈɑːɹdz ænd lˈɑːɹn.
Jeffrey began his professional playing career with Linfield, following a spell in the Manchester United youth team, and also played for Ards and Larne.