The 18-year-old defender is claimed to have played well for the Wolves U23 side against their Newcastle United counterparts and kept striker Dwight Gayle quiet in a 1-0 win.
John is a central defender who can also operate as a left-back, and Leeds United should at least take a look at him.
Wolves may not be willing to sell a player of John's quality to a direct Championship rival, but Leeds should explore the option of making a loan offer.
The West Yorkshire outfit are struggling in that department. Manchester United-owned Cameron Borthwick-Jackson has failed to show that he can make the left-back position his own, while Vurnon Anita and Stuart Dallas’s stints in that position have yielded mixed results.
John has shown what he is capable of for the Wolves Under-23 side, and he has the talent to step up and play competitive football.
Signing the teenager on loan in January until the end of the season would be a good idea for Leeds.