While at Auxerre, Benjani scored the opening goal in the 2005 Coupe de France final as they defeated Paris St Germain.

[5] On 5 January 2006, English Premier League club Portsmouth signed him from Auxerre for £4.1 million after Arsenal manager Arsène Wenger recommended the player to Harry Redknapp.

"In relation to Benjani's transfer, the enquiry also has identified concerns regarding the role of (agent) Teni Yerima and (third party) Ralph N'Komo.

"[7] Benjani failed to score in his first fourteen games for the club, but became a crowd favourite because of his high workrate and assists for other players.

Portsmouth boss Harry Redknapp banned Benjani from taking any further penalties after he missed a spot-kick in second-half injury time in a home game against West Ham United.

On 19 January 2008, Benjani earned his second Portsmouth hat-trick, scoring all of his side's goals in a 3–1 victory over Derby County at Fratton Park.

Benjani's goalscoring form during the first half of the 2007–08 season cemented Manchester City manager Sven-Göran Eriksson's interest in the striker, and on 31 January 2008 he had a bid of around £7.6 million accepted for the transfer of the player.

However, it was revealed that Benjani had missed two successive planes to Manchester, meaning he did not arrive at the club's training ground until 11:10 pm, leaving insufficient time to complete a move before the midnight deadline.

[10] A transfer was completed for Benjani to move to Manchester City on 5 February 2008 for a fee of £3.87 million on a two-and-a-half-year deal.

[12] Benjani entered talks with Hull City over a transfer to the club in August 2009, but negotiations ended after he failed to agree personal terms.

[16] Under new Manchester City manager Roberto Mancini, Benjani started his first game of the 2009–10 season in a third round FA Cup tie away to Middlesbrough on 2 January 2010, during which he scored the only goal just before half-time in a 1–0 win.

[17] On 8 June 2010, it was announced that Benjani's contract had expired and that he would be leaving the club, along with Sylvinho, Karl Moore and Martin Petrov.

[18] On 2 February 2010, Benjani moved to Sunderland on loan until the end of the season, after the Premier League confirmed that the paperwork had been completed before the transfer deadline.

[20] After a month of being a free agent and considering his options, it was revealed that Benjani was training with Premier League team Blackburn Rovers in the hopes of earning a deal with the club.

He made his debut in a 1–1 draw against Fulham at Ewood Park on 18 September, replacing Nikola Kalinić in the 65th minute of the game.

Also against West Ham he miss kicked a clear shooting opportunity which fell to captain and New Zealand skipper Ryan Nelsen who also sliced it but in the end he scored with the ball deflecting in off his thigh.

[23] In August 2011, he began training with Conference National side Stockport County[24] who were managed by Benjani's former Manchester City teammate Dietmar Hamann.

He was unveiled to the crowd at Fratton Park before the Championship clash against Brighton & Hove Albion after signing a one-year deal.