Signing for Paris-based club Red Star 93 in 1998 Mamady Side, started his senior career as a defender. 

On the last day of the 1999-00 season, Sidibe was tasked with playing in an unfamiliar striker's role, going on to score his first goal of the season.

Proceeding to join CA Paris-Charenton, the recently converted forward went on to play for one more season in France, before departing for the United Kingdom aged 21.

Sidibe joined Swansea City, who were then operating in the fourth-tier of English football. The striker scored seven times in 31 appearances for The Swans, joining Gillingham two steps higher in the second-tier.

The forward never emerged as a prolific scorer of goals with The Gills, netting three times in 30 games during his first season at the club.

In two more seasons with The Gills, Sidibe proceeded to score seven times in 76 second-tier outings.

He then joined Stoke City in the newly-formed Championship, with Tony Pulis bringing him to the club, however, he was sacked just four days after Sidibe's arrival.

Scoring six during his first season and nine during the second, Stoke were promoted to the Premier League during his third.

Playing 46 games across two seasons at England's highest level, and scoring five times in the process, Sidibe saw his game time with The Potters decrease after that.

In the 2012/13 campaign, Sidibe embarked on a loan spell back in the Championship with Sheffield Wednesday, before a second temporary spell with Tranmere Rovers of League One.

Ending his playing career is Bulgaria, Sidibe joined CSKA Sofia for the 2013-14 campaign, netting once in 11 games.

Opting to stay away from football after his playing career finished, Sidibe and his wife opened up a pâtisserie shop in a shopping centre in Stoke.