Rashford still hasn't extended his contract with Manchester United and it must be getting more worrying for the team on one hand. Because Rashford has made a huge progress recently. Under Erik ten Hag's management he has improved his performance a lot. He has made a huge level of contribution to the team with goals and assists throughout the season.
But his contract is still ending by the end of next season. This can even encourage some top teams to make an offer for him this summer. I wouldn't expect Manchester United to sell him of course but I wonder if Rashford would think of it.
If Rashford wants to leave and reports this to Manchester United, the team will have no choice but to sell him. Considering the possibility of him leaving the team for free at the end of next year, it would be better for Rashford to leave the team with a transfer fee. Of course Erik Ten Hag would be very happy if he stays at Manchester United because he is a player who has strengthened his hand in many offensive areas.