Real Madrid paid 111m for him on my save :O same year Barca spent over 120m on Pato actually haha
He is a great striker with massive potential but 45m is a bit too much, but I do think you will struggle to find a player as good as him who can play all those positions and with him being so young as well.
Alexis Sanchez if your looking for an all round attacking player that plays most positions and get a ton of goals, on my united save he cost me 22m and although i used him AMR he was my third choice striker and would get 30 goals a season
Muller is still to young to be a World Class player he is still a wonderkid but i think 45 m is a good price,I managed Bayern Munchen and in the first winter Real Madrid offered me 35 m but he is a top player If you have that money i think it would be a great signing.Hmmmm Cavani is a good striker he is scoring a lot of goals,and Alex Sanchez i don't know you can use as striker i think he is more RW or second striker but he is a good player