By Tom Gott Erik ten Hag has insisted Manchester United could not afford to sign a second striker this season as he prepares to do without first-choice forward Rasmus Hojlund for the next few weeks. United have confirmed Hojlund will miss at least two weeks, including the Manchester derby, after picking up a muscle injury. With Anthony Martial out injured as well, Ten Hag now has no senior strikers available in his squad. Young winger Omari Forson is expected to start against Fulham on Saturday, with Marcus Rashford moving into a central role to replace Hojlund. Asked why United did not sign a…