Pogba raised fresh doubts over his situation in the wake of Sunday's 4-0 win over Chelsea by claiming there was still "a question mark" over his United future, fuelling the belief he could yet leave within weeks.
The France World Cup winner provided compelling proof of his enduring value to United with two assists in their rout of Chelsea, underlining his status as their most important midfielder.
Although Pogba still wants to join Real, there is an acceptance on the part of the player and his advisers that any move will now have to wait until next summer at the earliest.
United know it may be difficult to hold on to Pogba next year if their club record signing still wants to embark on a new challenge with Real in La Liga.
But there is hope at United that a improved season from the team and a return to the Champions League may ultimately persuade Pogba his long-term future lies with the Reds.
Zidane has spent the summer instructing Real chief Florentino Perez to secure the signing of his French compatriot Pogba, whose boyhood idol was the Bernabeu boss.
Despite signing Eden Hazard, Luka Jovic, Ferland Mendy and Eder Militao, Zidane believes Real need Pogba if they are to stand any chance of competing with Barcelona and Atletico Madrid.