He received a number of prizes which included cash, car, trip to watch the 2010 FIFA World Cup, and two-week trial at Chelsea FC academy.

[2] Chelsea player and Ghanaian international Michael Essien stated that he was very happy with Baah's performance and urged the club to offer him a contract.

In March 2010, Baah sustained a broken shin in a Premier League match against Hearts of Oak at the Baba Yara Stadium.

On 30 November, he played his first match after returning from his long injury layoff for the Asante Kotoko SC Reserves side.

On 21 April 2012, Baah played his first league match against Mighty Jets helping Asante Kotoko to a 2–0 victory and scoring in the process.

Baah scored the winning goal on 25 March 2013 in a 0–1 victory over FC KooTeePee in the Suomen Cup to take his team through to the next round.

[14] Upon joining the club he helped HJK qualify for the Europa League group stages in 2014 with a 5-4 aggregate victory over SK Rapid Wien.

[16] On 9 February 2016, it was announced that Baah had signed for American Major League Soccer side, New York Red Bulls.

Baah missed the entire 2017 season due to complications during his injury recovery, playing only a few matches late in the year with Red Bulls II.