He counts Celtic, Aston Villa and Borussia Dortmund amongst his former clubs.
Celtic hero returns to football as ex-Aston Villa and Wolves boss land unique role at European giant
Glasgow World · Jan 28
Celtic hero returns to football as ex-Aston Villa and Wolves boss land unique role at European giant

Celtic hero returns to football as ex-Aston Villa and Wolves boss land unique role at European giant
Win 2 VIP tickets for MANI in conversation with A Celtic State of Mind