Aiyegbeni Yakubu says he never feared he had missed out on FA Cup glory when he quit English football for China in 2012.
Ryan Nelsen believes West Ham have issued a statement of intent by tying Winston Reid to a new deal.
The 34-year-old has agreed terms with Blues and passed a medical but the club are waiting on a visa application before a one-month deal is completed.
Former Senegal international Diop, who helped West Ham to promotion to the Barclays Premier League last season, has impressed on trial at St Andrew's.
He has also played in England for Fulham and Portsmouth, with whom he won the FA Cup in 2008.