For what it's worth, I'm in no way opposed to signing young players who aren't necessarily finished articles, as long as they evidence the requisite talent level. But €40 million is quite a bit of money, and entirely too much for someone who would represent a “punt” for all intents and purposes.
You add €10-20 million to what Lecce are demanding (which isn't much in the grand scheme of things), and you enter surer territory. Like Aït-Nouri, for example — that's a player who is still quite young at 23 years of age, closer to being a finished article so he would be more likely to hit the ground running, well suited to a playmaking wingback role, acclimated to Premier League football, and capable of operating as a fullback in a 4—3—3 or 4—2—3—1 in case Amorim is not the solution and the next head coach employs those bases (we need to construct a squad for the club with the medium to long term in mind, not for the coach-of-the-hour as coaches can be transient figures).
Or you wait until the summer and plump for Quenda, who comes across as a superior talent.
With Dorgu, we risk spending big money, waiting 2-3 years for him to develop, and ultimately arriving at a finished article that falls short of exceptations. So you naturally wonder if it's a prudent investment at this moment in time, when money is tight. All of that being said, I would obviously hope he comes up leaps and bounds and defies all expectations, if we do end up signing him.
Don't think so. But I'm frequently proven wrong, so you need to take all assessments and judgement calls with a fistful of salt.