Taking a reverse approach to this;
There are some Spurs players who are new to the club, young, unproven, or a combination of all of these things, and do not deserve to be binned or ruled in or out at the current time. This group is;
Forster, Lenglet, Spence, Skipp, Sarr, Bissouma, Gil, Richarlison.
This next group are the only current Spurs players that you can hang your hat on to get it right more often than not. They are proven and reliable contributing players.
Son, Kane, Kulusevski, Bentancur, Hojbjerg, Perisic and Romero.
There is then a further group of players who get it right half the time by making saves, tackles, blocks, interceptions or scoring goals. However they also make frequent errors and occasional costly errors; in particular against stronger opposition, with patchy and inconsistent form and are reaching / have already reached the point of no return at Spurs
Lloris, Dier, Davies, Doherty, Sessegnon, Moura.
The last group of players are probably done already.
Sanchez, Royal, Tanganga, N'dombele, Lo Celso, Winks. Reguillon, Rodon.
In summary Spurs have 14 players on their books, from the last two groups, who all take significant salaries, and will probably never contribute very much to the success of the Spurs first team ever again.
It's half the squad.