The central defender made 49 appearances during his time at The CNG Stadium, scoring 9 goals in an outstanding season where he was voted players’ player of the year.

The Doncaster-born 25-year-old began his career at Scunthorpe United before a transfer to Lincoln City after three years with the Iron.

He collected a National League winners` medal the following season at Sincil Bank but the start of the 2018/19 campaign saw him on loan at Eastleigh, before a January move to Port Vale gave Callum a first taste of the League football.

He joined Harrogate in May 2018 for an undisclosed fee.

Harrogate manager Simon Weaver told https://www.harrogatetownafc.com: “We want to wish Callum all the best. He has done superbly well here and is respected by his fellow teammates, as shown by them voting him their player of the year last year.

“We are sorry to see him go but appreciate that it is the nature of finishing in the top six that players are going to attract interest.

“Despite turning down multiple initial offers from Solihull, after serious consideration we felt it was right to accept the considerable offer for Callum, while bearing in mind he had one year remaining on his contract.

“His commitment in training and matches was top class and we wish him all the best for the future”.