Career
He made his Football League debut against Exeter City in the 2–1 home defeat, on 20 January 2009, coming on as a substitute for Solomon Taiwo in the 79th minute. At the start of the 2009-2010 season, Tejan-Sie was loaned out for a month to Conference South club Braintree Town. In January 2011, Tejan-Sie went on a month loan to Conference South club Thurrock.
The deal later was extendend by two further months.
In May 2011 Dagenham announced the release of Tejan-Sie at the end of his contract. He joined Wingate & Finchley in August 2013, making his debut on the opening day of the season in a 4–0 victory over Carshalton Athletic.
Tejan-Sie scored his first goal for Wingate & Finchley against Corinthian-Casuals in the London Senior Cup Second Round on 3 December 2013, and scored his first league goal in a 3–1 home victory against Thamesmead Town on 25 January 2014.