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.
454866 · Contracted to İstanbul Başakşehir
Mustafa Keçeli is a 45 year old Assistant Manager from Turkey.
They are currently contracted to İstanbul Başakşehir Futbol Kulübü earning £3K per week.