When did this become the Sanchez or Foyth thread. Foyth was signed as cb and converted to a rb but he would make a better rb/rwb than any player at the club currently. On Tanganga he is just nothing but a clumsy defender.When Sanchez and Foyth were at the club at the same time, Sanchez was used more often. Hence deemed better. I agree, I have also been critical of Sanchez but give credit where credit is due.
As I said - I cannot change your unsupported belief about some players.
All I can point out is that coaching staff that was on the dugouts (and that includes Poch if we talk about Foyth vs Sanchez situation) found Colombian to be better and preferred to use him.
I saw most of Foyth performances for Spurs and never saw anything real that would suggest he could be EPL top-6 level defender. He was just one of those players who the fanbase was optimistic about and tried to desperately cling to every positive spark while the coaching staff never saw enough positives to play and start him.