Number one priority and I'm not telling this just because of yesterday's disaster. It amazed me that ETH didn't deal with it immediately, when you build your team you are starting from the back and we have a goalkeeper who is not suitable, who is terrible when it comes to crosses and sweeping the back line and who is on massive unjustified wages.
The first thing he should do is replace him, not spend funds on Malacia and Martinez, because now we don't have enough money to solve all issues within the squad. It's shame that Onana agreed to join Inter before the ETH appointment because he could join for free.
It is very unlikely that we will bring another keeper this window, but in the future, options should be between David Raya and Robert Sanchez. Raya is a little bit better with feet than Sanchez IMO, but Sanchez is much better dealing with crosses so overall I would prefer Sanchez. Luis Maximiano is another keeper I like, comfortable with both feet, a great sweeper to his back line and very good at claiming crosses. Unfortunately, Lazio brought him a month ago for a fee of around £10m.
I can see one of those three goalkeepers being at Bayern in time when Neuer decides to retire.