Pochettino was one of the front runners to replace Ole Gunnar Solskjaer before United decided to appoint Erik ten Hag. A couple of months later the Argentine manager was sacked from PSG after a disappointing display in the Champions League.
He explained: "I am still so young. After Paris we decide to wait until after the World Cup.
"Paris was a tough experience, a great experience, but tough, and you need to process every single thing [when making a decision]."
Wolverhampton Wanderers were thought to be interested in him but ex-Sevilla boss Julen Lopetegui was deemed to be the right man to takeover. Pochettino is likely waiting for another top job to come along before dipping back into management.