Manchester United manager, Erik ten Hag, has said the new season will be the “survival of the fittest”. The Red Devils missed out on a top-four place last campaign, but beat Manchester City to win the FA Cup. Ten Hag has already added Lenny Yoro and Joshua Zirkzee to that team. Both players are set to feature against Arsenal in a pre-season friendly in the early hours of Sunday morning. “We know that because [when] we have injuries, we are vulnerable, and we have to avoid this. First, by getting less injuries and picking up less injuries. And second, our squad has to be that good in depth. “Of…