**Celtic have parted company with manager Tony Mowbray following Wednesday’s 4-0 defeat at St Mirren.**Mowbray won 17 of the 30 league games played since he arrived from West Brom last June and struggled in Europe.
And the Glasgow club trail Scottish Premier League leaders Rangers by 10 points, having played two more matches than their Old Firm rivals.
A former Celtic defender between 1991 and 1995, he failed to make an impact after succeeding Gordon Strachan.
Assistant manager Mark Venus and first team coach Peter Grant are also leaving.
Mowbray became the 16th manager of Celtic after the club agreed to pay £2m in compensation to West Brom.
The affable figure had been one of three managers targeted, along with Burnley’s Owen Coyle, now at Bolton, and Swansea’s Roberto Martinez, now at Wigan.
On his arrival, he said he lived by a code of “honesty, integrity, humility and respect” and he hoped to bring those qualities to the Celtic team.
However, his reign was not a happy one, beginning with elimination from the Champions League, albeit against a slick Arsenal side, who have progressed with ease to the last eight of the tournament.
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Dropping into the Europa League, Celtic were expected to qualify from a group that included Hamburg, Rapid Vienna and Hapoel Tel-Aviv, but they could only muster six points from six games, with just one win.
The domestic season started brightly and Celtic were four points ahead of Rangers going into the first Old Firm derby of the season on 4 October, but they lost 2-1 at Ibrox.
And away matches proved to be Mowbray Achilles heel, with Wednesday’s 4-0 drubbing by St Mirren heralding Celtic’s sixth league defeat on the road.
Strachan had won three titles in four seasons at Celtic Park but Mowbray quickly set about dismantling the squad he inherited, bringing in a raft of new faces.
The big money loan arrival of Spurs striker Robbie Keane in January briefly lifted spirits among supporters but Celtic could not make inroads into Rangers’ lead.
Mowbray had a long career at Middlesbrough before his switch to Celtic and later moved on to Ipswich, where he started his coaching career.
He had a brief spell as caretaker boss at Portman Road after the sacking of former Scotland boss George Burley before becoming a manager in his own right at Hibernian.
Mowbray led the Edinburgh club to two top-four finishes in 2005 and 2006, after which he left for West Brom.
He led the Baggies to the Championship play-offs, losing to Derby, but the following season they won the title and promotion to the Premier League.
However, they only lasted a season in England’s top tier and were relegated, despite receiving plaudits for their attacking style of football.
His summer switch to Celtic Park was greeted with widespread enthusiasm among the Celtic faithful but few of those will lament his departure.