Santo is represented by Portuguese agent Jorge Mendes, as are several Wolves players, including record-signing midfielder Ruben Neves. Victory would see Wolves open up a 12-point gap, with Cardiff having a significantly inferior goal difference and only four matches remaining. But rival clubs have complained to the English Football League about the relationship between Wolves and Mendes.
The midlands club have had six different managers, been down to League One and changed owners in that time, but have now returned to the top flight.
Nuno Espirito Santo's side, who face Birmingham on Sunday, watched on TV as a last-gasp equaliser from Neal Maupay earned Brentford a point at Craven Cottage, a result which meant Wolves are now assured of top-flight football next season for the first time since 2012.
And despite a mid-winter blip, Wolves have finished as strongly as they began with 16 points from their last possible 18 securing promotion.
For a while on Saturday it looked as if Wolves would have to wait until Sunday, when they play Birmingham City, to go up when Fulham took a 70th-minute lead against Brentford through Aleksander Mitrovic.
Derby County, surprisingly beaten 3-1 by bottom club Burton Albion, drop out of the remaining playoff places, which are now occupied by Aston Villa, who beat Leeds United on Friday night, Middlesbrough and Millwall.
They've gained 28 out of their 42 Championship video games this season and have misplaced simply six.