PSG will travel to Lionel Messi's Barca for Tuesday's last-16 first leg at Camp Nou after edging Nice 2-1 in Ligue 1 on Saturday.
Goals from Julian Draxler and Moise Kean guided PSG past Nice in the French capital, where the Ligue 1 champions extended their winning streak to four matches across all competitions.
Post-match, head coach Pochettino highlighted the importance of the upcoming showdown against Barcelona but believes PSG will be ready for it.
"We have to be ready [for Barcelona]," Pochettino told reporters. Because we have a very important match on Tuesday. And the team will be ready for this match.
"First of all it will be recovery, both physical and mental [before Barcelona]. It's important to recharge the batteries.