I don't think we ever valued him at mere 60M, especially this summer. We wouldn't have let him go anyway, at any cost, as there is currently no real back-up for him. If there's no target in sight next summer, you won't get him. If he wants to go, that is. We only sold you Maguire because we already had enough cover for him (Benkovic and Soyuncu both bought in the summer 2018. The latter cost 19M and is filling Harry's gap very nicely).
There's something some of you must understand about us, if we don't want to sell, we just won't or you'll have to pay an absurd price. We're well run, have (enough) money, a good manager, an excellent scouting department and a very coherent long-term strategy, based on youth and smart buys, all backed-up by the board and the owners. We're finishing to build one of the best training grounds in the country and a stadium extension is in the plans.
Our plan is to try to challenge regularly for the top 6, something we could achieve in the next 5-6 years or so, if we keep on this path. Maddison is part of this plan, so I highly doubt we'd let him go next summer, let alone in January. You might find someone else anyway.