The Cameroon midfielder failed to make an impact for Manchester United and Aston Villa in the Premiership.
Djemba-Djemba joined Manchester United in the summer of 2003 in a £3.5million deal from Nantes.
“I am having a good season. I lost my way a bit when I signed for Manchester United,” Djemba-Djemba told skysports.com.
“However, I am a good player, you don’t play alongside Roy Keane and Paul Scholes if you are a bad player.
“I heard West Ham is interested and that means I am having a good season.
“I have unfinished business with the Premier League, so who knows?
“It would be good to go back there and prove myself.”