We can say that Mason Mount is a promising player because he is 24 years old. Chelsea will want to keep him first, as he is one of the players who benefit Chelsea. If he cannot keep it in the team, they will not approve his transfer before the transfer fee they will earn from him is high. If Manchester United makes this transfer, the burden on Rashford may be lessened.
He is still young and he can be a better player in the future. ETH sees this on him. The only problem if mount feels chelsea makes his transfer to the manchester united become even more complicated. that's why mount is not happy with what already done by chelsea.
As long as Chelsea sends a green signal to approve Manchester, Mount can easily reach a personal agreement with Manchester United.. The problem if chelsea is not sending a gree signal to approve manchester united's last bid.
Manchester united will not increase club's bid even higher for him. Mount was chelsea's academic player. Selling him with such price already given a lot of profit for chelsea.
Mason mount is waiting for chelsea's response now. It's caused by it needs chelsea's approval to make him leave from united. It seemed to me if mount is tired with chelsea's complicated process.