The major problem we have is investment and attracting it to the club to keep growing the fan base and the brand. To go up and stay up we probably need £200million and that isn't a wild stab in the dark. Leeds have a net spend of £95 million and Burnley £57 million and that is before any infrastructure improvements. Leeds new stand is expected to cost at least £150million, Fulham recently spent £100 million on their "riverside development" that also has non-matchday income. For the long term growth of the club we need investment on 3 fronts. We have the academy and new training ground that is committed, we need investment in the squad (although never say never with promotion, if it was on the cards this year we would need a full change 1-11 to even compete)
The 3rd for me is a huge potential for non-match day and match day income and that is the South Stand Carpark. Although not using it as a carpark out of the front using google maps to measure distances you can easily fit a 45 x 45 metre block, on one level, which gives 2,025 square metres. Due to the height of the hotel (8 story) and the South stand a 2nd level could be easily justified giving 4,090 square metres of space and possibly even a 3rd/4th. This is equivalent to a large supermarket for context on just 2 levels, however using the local demographic and the proximity of the students and other locals, you need shops that don't attract too many cars.
2 options to consider having a smaller local store such as a Tesco/Sainsbury's/Morrisons local and then the best way would be to split the venue with the upper level being a food and drink court adding in shops like Greggs, some form of coffee shop, pizza etc alongside a licence premises. Downstairs alongside the 247 store having clothes shops that appeal to the student budget and market.
I have attached a rough diagram of the area that could be used, it still gives access to the South stand, hotel and turnstiles and still offers parking within the carpark. On an average of the whole space (not individual lets) we are easily looking at £1mill annually in just rental income based on 2 floors. Due to footfall during matchdays there could be clauses added regarding income that comes to the club based on sales especially in the food court as footfall would increase.
An other alternative is to have the convenience store separate at the front within the carpark/potentially inside if we are extending to 3 or 4 floors and have the lower floor as vintage arcade games/drinks bar type set-up, these have been popular in Leeds, although on a 4 floor scale with the Arcade Club (
https://www.arcadeclub.co.uk/) in the Kirkstall area of Leeds (also in Bury and Blackpool). The licence premises could be from the Arcade club along with their food offering too, you could maximise the space and offer Sheffield students and locals something to do whilst also generating non-match day income. One of the floors could be a dedicated food and drink space making it easier on match days