How about "Athlete Z has 1000% indicated the presence of a vague notion that he may consider attending ISU if nothing better comes along"?Let's just change the term to more accurately describe what it is.
Commit means something fairly specific in the language.
Maybe announce "Athlete Z has indicated the presence of a vague notion that he may consider attending ISU if nothing better comes along. Vague notion subject to cancellation by coaching staff if a better player becomes available."