From that article - "The club wants the return on investment as quickly as makes sense. Liverpool has to be sustainable. We have formulated a model that gives a fast return of the capital expenditure over five to six years, but that will also allow the club to enjoy some benefits from the expansion even before that time. Beyond the five or six years, we will of course really see more revenues on the bottom line" So with total cost of £100m and additional revenue per year £20m (£65m p.a. as opposed to £45m), a payback period of 5 years means no additional money to go into the playing side. But FSG will be banking on that their asset is worth a lot more.