Goalkeeper is the only position they should look to get someone, and Livakovic is cheaper than anyone else and he is young enough and he is definitely a good alternative.

However, dude is good enough to be a starting GK in most clubs, so going to Bayern to play there until end of the season and be benched next year wouldn't be an ideal situation for him, playing at Bayern until end of the season and then going to another team would be great but he needs to get that 1 year contract if he could and Bayern wouldn't want that. Aside from the GK position, which could be handled with backup GK if you ask me, I do not think that they really need any other player, they are fine in all other positions.