Colombian journalist Pipe Sierra reported the breakdown of talks, with Rojas having made only peripheral appearances for Arsenal's academy sides this season despite being a regular in Colombia's Under-20 setup — for whom he has earned six caps.
The pathway at Arsenal proved too crowded. With senior options and more advanced development players taking priority for training time and match opportunities, Rojas spent much of the 2025-26 campaign with limited involvement.
At 20 and approaching the stage of his career where consistent senior or near-senior football becomes essential, the option of remaining on the fringes for another year held obvious risks.
His decision to leave is understood to be driven by football reasons rather than any financial dispute. At his age and with his international profile at youth level, he will attract interest from clubs across Europe where the route to first-team football is more clearly defined.
Arsenal have lost several academy players to free agency this summer, a recurring pattern that reflects the difficulty of retaining talented prospects who are ready for senior action but cannot access it within the first-team structure at the Emirates Stadium.