Fawaz, a 29 year old who left the shores of Nigeria aged 14, was held in a detention centre for 34 days including Christmas and New Year before he was freed on bail.
The London's current middleweight boxing champion arrived in the UK from Nigeria at the age of 14 and has represented England on six occasions - even against his birth nation.
He is at risk of deportation after eight undercover officers arrested him at the club in Stonebridge for failing to report to an immigration centre.
According to the Mirror, the 29-year-old was taken to the detention centre on Wednesday, November 29 after after the Home Office had rejected several applications for citizenship and rights and declared his marriage to a British citizen void.
Fawaz is now staying at the London home of his coach Toks Owoh. Under his bail conditions, he must register every week at a Home Office centre in Hounslown and reside with Owoh.
He was granted bail after the Home Office was unable to say when it might be able to secure the necessary travel documents to deport him.
The hold-up in the Home Office securing the necessary deportation documents is reportedly down to the Nigerian High Commission refusing their application three times.
It is said to claim that while Fawaz - whose dad was a Lebanese immigrant and mum was from Benin - was born in Nigeria, he is not a citizen there.
A Home Office spokesman said it had reviewed Fawaz's applications several times, that they do not consider him 'stateless' and there was no case for him to remain in the country.