Christian Horner and Red Bull will decide on the future of Sergio Perez after the Belgian Grand Prix this weekend. It’s emerged recently that he’s at risk of losing his seat midway through the season. It was only last month that Perez signed a new contract that was supposed to keep him at Milton Keynes until the end of 2026. But his glaring underperformance since has forced the team to consider drastic action. Helmut Marko has previously indicated that Red Bull will make a decision during the summer break. That could mean that Perez’s performance at Spa is decisive. He dealt further damage to …