Paul Lambert responds to doubts over Ange Postecoglou managerial credentials, citing the fact both Wim Jansen and Arsene Wenger arrived in the UK from Japanese clubs relatively unknown but went on to enjoy great success.
'Transfers key for Celtic, Ange must win'
Sky Sports UK
Ange Postecoglou must bring instant success to Celtic and will not be given time to settle, according to Paul Lambert, who also..
