Muhsin Yaşar was born on December 31, 1995. According to the records of the Turkish Basketball Federation, he is a full Turkish citizen.

Yaşar, who began his basketball career at the youth level of the Bursa-based Tofaş Sports Club, began his professional career with the club's pilot team, Tofaş Gelişim, in the 2014-15 season. That same season, he was promoted directly to the main team, competing in the Süper Lig, rather than Anadolu Efes. He averaged 2.6 minutes per game, averaging 0.9 points and 0.1 rebounds in 7 league games. The following year, in the 2015-16 season, he averaged 4.4 points and 2.5 rebounds in 13.5 minutes per game in 28 games in the Turkish Basketball Super League. He also averaged 15.5 points, 8.0 rebounds, and 1.6 assists in 14 games for Tofaş Gelişim in the TBL 2nd League, marking remarkable statistics for a player who came through the youth ranks in his first three professional years. He continued to receive regular playing time and responsibility in the 2016-17 season, playing in both the Super League (18 games, 6.8 minutes, 2.9 points, 1.3 rebounds) and the TBL 2nd League (16 games, 13.5 points, 7.8 rebounds, 7.8 assists).

Yaşar, who spent his entire professional league career in Türkiye, played for four different teams over the course of eleven seasons. He remained with Tofaş from 2014-15 to 2021-22, before transferring to Gaziantep Basketbol for the 2022-23 season, Darüşşafaka Lassa in 2023-24, and Karşıyaka in 2024-25. According to TBLStat data, he contributed 1,779 points, 710 rebounds, and 183 assists in 263 league games during this period. He has consistently averaged double-digit minutes every season throughout his career, expanding his role.

Following his youth stints with the U20s, Yaşar was promoted to the senior national team. According to FIBA records,

• Youth National Teams (U20): Averaged 3.4 points, 2.0 rebounds and 0.1 assists in 20 games in the 2014 and 2015 U20 European Championships.

• National Team: Played in the 2021, 2023, and 2025 European Championship and World Cup qualifiers. Across these competitions, he averaged 4.1 points, 2.5 rebounds, and 0.5 assists in 8 games.

Standing at 2.08 meters tall, Yaşar primarily plays the center position. He is responsible for controlling the court on defensive rebounds and in battles under the basket, while also occasionally providing support to the power forward rotation.

Yaşar, who has not won a Turkish Basketball Super League championship, has regularly appeared in European cups:

• 2015 EuroChallenge (Tofaş): 2 matches

• 2021 Basketball Champions League (Tofaş): 12 matches

• 2022 Basketball Champions League (Tofaş): 14 matches

• 2023 FIBA Europe Cup (Gaziantep): 14 matches

• 2024 Basketball Champions League (Darüşşafaka Lassa): 9 matches

• 2025 Basketball Champions League (Karşıyaka): 8 matches

In the 59 matches he played in these tournaments, he saw different seasons in terms of on-field efficiency and role distribution.

• 2014 U20 European Championship: Gold medal

• 2015 U20 European Championship: Bronze medal