[1] In 2014–2015, Annor was promoted to the senior side of Bechem United by head coach Tom Strand who was impressed after watching him train with the youth team.

He scored a brace in the final match against Okwawu United on 4 September 2016 to secure 2–1 victory to clinch the trophy, for the first time in the club's history.

[6][7] He beat off Latif Blessing of Liberty Professionals, Akoto Danso of Okwahu United and West African Football Academy's midfielder Gideon Waja to win the award.

[9] At the end of the 2016 season, Annor moved to Spain and joined Segunda División B side CF Fuenlabrada in March 2017 on a three-year deal.

[17] The club CEO of Bechem United, Nana Kwasi Darlington confirmed in March 2020 that five key players including Annor would be sold before the next season starts.

He needed me badly at Kotoko but I’m sorry for disappointing him...Though the deal couldn’t go through I’m confident of succeeding at Ashantigold and I’m hopeful I will return to Asante Kotoko.” In July 2020, Annor signed for Obuasi-based club Ashanti Gold on a three-year as the club took steps to bolster their squad towards the CAF Confederations Cup campaign and the 2020–21 Ghana Premier League season.

He later apologised to the then coach of Kotoko Maxwell Konadu for snubbing them and stated that he was confident of succeeding at Ashanti Gold.