The fortune to spend to which you refer does exist having already spent 50m of AL and having had bids of 40m and allegedly a lot more turned down by Monaco for Lemar and Mbappe. Okay, I know the Mbappe one is utter nonsense but let’s just play along.
As it stands, if the media are to be believed and to be fair it sounds plausible, he is now being somewhat restricted by having to offload players before buying, players who by decisions he has made are now turning out to be very difficult to offload. Players who perhaps would be easier to offload, and of course supporters are split on whether they should be sold or not, he is apparently refusing to sell.
This of course could yet turn very sour in events which would make last season seems like a kids party. Another failure to qualify for CL football and the resultant financial impact, then coupled with > 100m of assets walking away from the club for nothing in summer 2018 could see future spending even further restricted.