[5] In the 2005–06 season, Bassong was promoted to the first team and made his professional debut for FC Metz, starting the whole game, in a 0–0 draw against Strasbourg on 23 August 2005, keeping a clean sheet in a process.

[3][19] In July 2008, Bassong was offered a one-week trial with Newcastle United and made his debut in a pre-season friendly against Doncaster Rovers.

[23] Since joining the club, Bassong began to receive a handful of first team appearances for the side, playing in the left–back position.

[27] Following his return from suspension, Bassong continued to regain his first team place for the side despite suffering from groin injury and then was sent–off once again on 16 May 2009 as part of 0–1 home defeat to Fulham in the penultimate game of the season.

[30] Following Newcastle's relegation to the Championship, Bassong expressed his desire to leave the club, with Manchester City, Arsenal and Tottenham Hotspur linked with him.

[34] On 6 August 2009, it was confirmed he had passed a medical at Spurs signing a five-year deal and completed an £8 million move to the North London club that same day.

[36] Bassong scored on his debut for Tottenham in a 2–1 victory over Liverpool, heading in the winner from a free kick cross from teammate Luka Modrić in the 59th minute.

[37] During a 3–0 loss against Chelsea on 22 September 2009, he suffered a concussion "after falling awkwardly in a collision with Nicolas Anelka" and had to be substituted.

At the start of Tottenham's 2010–11 Champions League campaign, Bassong scored Spurs' first goal in a 3–2 losing effort to Swiss club Young Boys.

[42] However, he failed to start or make the bench for the second leg in which Spurs won 4–0 (6–3 on aggregate), sending Tottenham into the Champions League group stages.

[46] Ahead of the 2011–12 season, Bassong expressed his desire to leave Tottenham Hotspur, citing lack of first team opportunities at the club.

[47] Throughout the summer transfer window, he was linked a move to Newcastle United and Queens Park Rangers, but ultimately stayed at Tottenham Hotspur.

[50] In the next encounter against Rubin Kazan on 3 November 2011, however, he was at fault for giving away a free kick, leading to a goal from the opposition team, as Tottenham Hotspur lost 1–0.

On 31 January 2012, Bassong joined fellow Premier League side Wolverhampton Wanderers on loan until the end of the 2011–12 season.

[54] After suffering a hamstring injury, he returned to the starting lineup and featured in a number of matches in the first team until his sending off in the early first–half, in a 3–0 loss against Arsenal.

[61] He started in the first four league matches until he suffered an injury against Newcastle United in early minutes of the first half, as Norwich City lost 1–0.

[79] Bassong then returned to the starting lineup for Norwich City, without the captaincy, where he helped the side beat Crystal Palace 1–0 on 30 November 2013.

[81] Three days after that, Bassong returned as the club's captain against Swansea City, where he made a mistake that led to Nathan Dyer, as the game finished 1–1.

[88] After his loan spell at Watford came to an end, Bassong was given a chance to return to the first team by Manager Alex Neil.

[92] His performance was praised since returning from a loan spell at Watford and played a role that saw Norwich City qualify for the play-offs in the Championship.

[93] He started the whole game in the Championship play-off final against Middlesbrough, as Norwich City beat them 2–0 to secure promotion to play in Premier League football next season.

[102] Following his return, Bassong spent the rest of the 2015–16 season, competing in the centre–back position with Timm Klose and Ryan Bennett that saw him on the substitute bench.

[117] On 25 October 2018, Bassong signed a short-term deal at League One side Peterborough United after spending 18 months as a free agent.

[118] Bassong made his Peterborough United debut, starting the whole game, in a 2–1 win over Luton Town in the EFL Trophy campaign.

[123] Bassong made his Volos debut, playing the full 90 minutes, in a 2–1 win against Panionios in the opening game of the season.

[131] Bassong was selected for the 2010 World Cup squad in South Africa alongside his former Tottenham teammate Benoît Assou-Ekotto.

[134] After almost a two years absence, Bassong was called up to the national side, appearing as an unused substitute against Togo on 23 March 2013.

[135] It wasn't until on 6 September 2015 when he made his first appearances for Cameroon in four years, coming on as a late substitute, in a 1–0 win against Gambia.

[138] As Bassong grew older, he remained interested in football and his father was eventually give in and allowed him to play the sport.

[142] In May 2013, he made national headline when The Sun published pictures of Bassong holding a gun, which was posted on the internet.