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.
2000210800 · Contracted to Gençlerbirliği
Sümer Alvurdu is a 40 year old Performance Analyst from Turkey.
They are currently contracted to Gençlerbirliği Spor Kulübü earning £599 per week.