It is true Manchester United needs a goal keeper, few days back I saw a local news that had it that Manchester United was already considering getting one already and moves are in place but I do not know just yet if the deal is already in motion as I am not so sure about the authenticity of the news. A striker is also needed and there have been some attempts on one which is not clear because Arsenal shares same interest and the player is giving preference to the gunners as his dream.
United are facing a difficult time rebuilding their squad in this transfer window. Several players rumored to be wanted are facing competition from other clubs, which is clearly making things difficult for them, as they have other options better than United.
Amorim must be having a headache right now. Whether to retain some of his players or replace them with new ones will be difficult. All United can do now is try to improve their performance with what they have at the start of the season. If their performance improves, they will have a chance in the next transfer window. Hopefully, Amorim can do that.