[2] Impressing during a trial with 2011 Cambodian League winners Phnom Penh Crown and netting three goals in a friendly versus TriAsia,[3] Bosma officially completed his transfer to the club in August 2014,[4] signing for one season only[3] and intermingling with five foreigners as well as eight Cambodia national team players.

[6] Comparing footballers in Cambodia to their Dutch counterparts, Bosma has stated that they are better at attacking play but are behind in terms of tactics and defense.

[5] Cancelling his contract with the acquiescence of the Phnom Penh Crown board shortly after the Mekong Club Championship,[6] the Dutchman signed for Song Lam Nghe An of the Vietnamese V.League 1 in December 2014,[7] changing to a midfield position in the process.

[8] Joining Sydney United 58 of the Australian NPL NSW until the end of the 2015 season following his spell in Vietnam,[10] Bosma almost sealed a move to a Malaysian third division team but the deal never happened.

[10] While plying his trade with Sydney United, the Amstelveen native helped them clinch the 2015 Waratah Cup, making two assists in the semi-final.