The exciting Scottish prospect concluded the season with an amazing 19-goal tally.
However, the Scottish midfielder is tied with Wells until 2021.
The 19-year-old broke into the first-team at the latter half of the last season, making only 2 appearances.
But Turnbull proved to be a revelation at Fir Park this season and his string of brilliant displays led to his debut with Scotland’s U-21 team.
His exceptional performance was against Dundee, scoring a brace with a goal coming at the dying seconds of the injury time.
In addition, he also won the SWFA young player of the season 2018/19.
Primarily a central midfielder, Turnbull also can act as an attacking mid and a wide midfielder as well.
Celtic’s interest in Turnbull
Turnbull would be an excellent addition to the Hoops and can provide competition for Tom Rogic – the Australian midfielder who endured an injury-laden season. The 26-year-old struggled to find his feet due to the recurring injury woes.
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The Celts ended their season with another domestic treble under Neil Lennon, who is set to continue as the manager on a permanent basis.