Mousse Dembele was injured very early against Wolverhampton and was missed horribly for ball retention purposes. Old Dembele who was supposed to leave is now critical. This one injury led to a cascade of weaknesses thus your question was timely.
Your Question became very salient as Lamella and Son started together against Wolves and up 3-0, but without a good defensive holding midfielder (Dembele) who can play defense. Son was replaced in the 58th minute and was very upset for his likeable have fun demeanor. Son is very well liked on the team by the other players. So Something else is going on. He was replaced by a not ready Eriksen. Foyth played FB in place of Davidson Sanchez and got beat in the box two straight times for 2 consecutive penalty kicks leading to 2 consecutive Wolves Goals. The injury to Vertonghen at FB and Dier has exposed huge holes in Spurs.
Pooch’s selections and subs utions for this game were very suspect and Wolverhampton deserved to win the game.
Injuries are now making Ponchetino really earn his 5 year contract money.