Between the races held in Singapore and Japan, Mattiacci said he would honour Alonso and di Montzemolo's agreement if Alonso did not want to continue on his current contract or extend it beyond 2016. A memorandum of understanding was suggested by Briatore for Alonso to sign in his belief Mattiacci would honour his wish. Mattiacci asked Alonso to travel to Maranelllo and sign it. Trigger causes in Vettel's Red Bull contract needed to be activated before he could join so and not expose Ferrari as having signed three racers to drive two cars. Vettel's move to Ferrari was announced at the Japanese Grand Prix; This angered Alonso who believed he had no control over the narrative and argued with Mattiacci.