The Cardiff athlete edged out King to the England Under-23 Championship 110m hurdle crown last weekend by just one hundredth of a second.
That win guaranteed Omoregie automatic selection for the European Under-23 Championships in Tallinn next month.
King has to wait until June 30 to find out if he will be selected for the Estonia event.
It is expected he will be named in the Great Britain squad considering his performances this season, the fact that he has a faster legal season’s best and how close he was to victory at the trials.
However, a good performance this weekend would certainly help his cause, especially if he could beat Omoregie, as he did at the Loughborough International Meet earlier this season.
The pair will clash on Sunday at the Bauhaus Junioren Gala at the Michael Hoffman Stadium in Mannheim.
King’s Bath University team-mate James Gladman is also among the entries for the event, where Germany’s Gregor Traber is the fastest on paper with a season’s best time of 13.42.
The 110m hurdles heats are due to be held at 11.10 (GMT). There is live coverage of the event HERE
The following weekend King and Omoregie are set to clash again at the British Championships at Birmingham’s Alexander Stadium.
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