In January 2009, Archdeacon went on loan to Albion Rovers however injury restricted him from making any real impact, and only managed 3 starts and 7 substitute appearances, failing to score.
Archdeacon made his debut for Motherwell in a Europa League match against Llanelli on 9 July 2009, and this would be his only appearance for the Steelmen.
[1] He was once again loaned out, this time to Brechin City, and there he scored 3 goals in 9 starts as the Glebe Park outfit just missed out on promotion to Division One.
Mark scored his debut goal for Clyde against former team Brechin City in a 4-2 win at Glebe park in the Scottish League Cup first round and scored the last goal in a 7-1 win over East Stirlingshire.
[2] In the summer of 2012, Archdeacon left Clyde and joined Scottish Junior football side Kilbirnie Ladeside.