It's unfair to compare that with what teams like Chelsea and Manchester City have spent this year because they're fine-tuning not rebuilding. It's more realistic to compare it to a time when Chelsea and Manchester City were rebuilding which is what we're doing now.
This is what Manchester City spent from rebuilding in their earlier seasons to fine tuning their squad. £127,700,000(2008/2009), £125,000,000(2009/2010), £154,750,000(2010/2011), £76,000,000(2011/2012), £54,000,000(2012/2013), £103,200,000(2013/2014), £51,500,000(2014/2015).
This season Manchester United have a net spend of £47,700,000.