If the transfer is 40M, that works out as 10M a year for 4 years. For a club with a 500M annual revenue that works out as investing 2% of revenues on the player. If it helps the team win the Champions League it's worth every penny. Messi is 25, this is possibly the best chance the club will ever have to win Champions League trophies. Fuck the future, the club should be looking at what they need to win now.