Those who submit STAFF changes, please provide an official source that shows the transfer/release. Transfermarkt isn't always trustworthy when it comes to staff.
29235849 · Contracted to Celtic
Staff role changed to Sports Scientist (Reserve Team).
Contracted to Celtic
Jack Holroyd is a 31 year old Sports Scientist (U18 Team) from England.
They are currently contracted to Celtic FC earning £3K per week.