The Championship club have also secured an option to make the transfer permanent at the end of the campaign. Ouma becomes Charlton’s seventh signing of the summer transfer window.
The 21-year-old arrives in England with growing experience in European football after featuring for Slavia Prague. Known for his energy, technical ability and versatility in midfield, Ouma is expected to add depth and quality to the Addicks’ squad as they prepare for the new Championship season.
The move represents a significant step in the Kenyan international’s career, offering regular competitive football in one of Europe’s most demanding second-tier leagues. Charlton will hope the young midfielder can make an immediate impact under the current technical team.
Ouma will now link up with his new teammates as the club continues its pre-season preparations.