On 12 July 2016 , prior to the start of the 2016 -- 17 season , Calder rejoined Doncaster on loan until January .
On 3 March 2016 Calder moved to Doncaster Rovers on loan , making 12 appearances as Doncaster were relegated to League Two .
On 12 July 2016 , prior to the start of the 2016 -- 17 season , Calder rejoined Doncaster on loan until January .
On 3 March 2016 Calder moved to Doncaster Rovers on loan , making 12 appearances as Doncaster were relegated to League Two .