Marton Fulop had a malignant tumour removed from his arm in 2013
He played for nine English clubs including Manchester City and Leicester
Fulop joined Tottenham from MTK Budapest in 2004 after having a trial
Goalkeeper hoped to return to action but last played over two years ago
Tributes have poured in from former clubs including Spurs and Coventry
Flags at Stadium of Light and club training ground are flying at half-mast