ɪnðə tˈuː θˈaʊzənd fˈaɪv zˈiəɹoʊ sˈɪks sˈiːzən, dʒˈɛfɹi ɡˈaɪdᵻd lˈɪnfiːld tʊ ɐ klˈiːn swˈiːp ʌv dəmˈɛstɪk tɹˈoʊfiz, mˈɪsɪŋ ˈaʊt ˈoʊnli ɔnðə kɹˈɔsbˈoːɹdɚɹ ˈɔːlˈaɪɚlənd kˈʌp.
In the 2005–06 season, Jeffrey guided Linfield to a clean sweep of domestic trophies, missing out only on the cross-border All-Ireland Cup.