Id be fucking shocked if he wasted his time doing that.
Is it a waste?
Spend maybe 50 million getting them in the Premier League and a other 50 million keeping them up for 3 or more seasons and he's trebled his money
27,000 seater stadium in London, easily filled in The Prem at £50 a ticket minimum.
Getting a side promoted is the easiest way to make a massive return on your investment and "success" would be relatively instant just by implementing Premier League standards at a club in turmoil. "success" at a Premier League club would be a much slower process.
Plus he's used to the London accent already.