Celtic have lost a member of their backroom staff to RB Leipzig.

Sport science chief Jack Nayler, according to the Scottish Sun, left the club for the Bundesliga side weeks before new head coach Ange Postecoglou walked through the doors at Parkhead.

The German club are reported to have headhunted the former Real Madrid, Chelsea and PSG staffer.

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Glasgow Times:

He was brought to Glasgow by former boss Brendan Rodgers back in 2016 but will now work with ex-Hoops managerial target Jesse Marsch.

A Leipzig statement said: “Dr. Helge Riepenhof's performance unit will be expanded next season to include the Sports Science department, which will be led by Jack Nayler.”

It is believed Postecoglou will now search for a replacement.

Nayler opted to remain at Parkhead after Rodgers left the club and he worked under Neil Lennon and John Kennedy during his time as interim manager.