Erik ten Hag has emphasized the importance of fitness and squad depth for Manchester United's upcoming season, following a disappointing 1-0 defeat to Rosenborg in their pre-season opener. Despite the absence of several first-team players, Ten Hag fielded a mix of senior and youth players, with goalkeeper Radek Vitek making several crucial saves. Ten Hag criticized the team's performance as below the standards expected at Manchester United and stressed the need for improvements ahead of their next matches. The manager also highlighted the increased demands of the revamped Europa League format and called for more reinforcements to maintain competitiveness. United will face Rangers next as they continue their pre-season preparations.