Tottenham chairman Daniel Levy admits sports director Damien Comolli's future depends on coach Juande Ramos being successful.
Frenchman Comolli played a key role in persuading Ramos to leave Sevilla and take over at Spurs.
Levy said: "Damien recommended Juande Ramos, so clearly he would have to take responsibility if it didn't work.
"I have every confidence it will work."
Comolli's role has come under scrutiny but Levy added: "Virtually every club in Spain has a sporting director.
"We want a coach who specialises in getting the best out of players, which means making the team selections and making all the tactical decisions.
"What the sporting director does is take a lot of the pressure off the manager. They can go on scouting missions and be in charge of scouts.
"They also have to be in charge of the medical department and the academy, and it is impossible for one person to do everything to the best of their ability.
"But the best chance of success is if you have someone looking after things that are outside the first team, and one who looks after the first team.
"Then, they can come together over the question of transfers."