Ibrahimovic says Verratti's progress is a great sign of PSG's own development.
"The team is progressing well," he told a Press conference. "We have made a big jump in a short time.
"But we have to continue to work as hard as possible if we want to compete in all competitions.
"Many of our players are constantly evolving, which helps us - players like Verratti add a lot."
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