"It would be a tough series," Yuvraj told reporters on the sidelines of a prize distribution ceremony here.
"Pakistan is currently playing in Australia. Any team that comes back after touring Australia ... Their confidence level goes up," he said.
He recalled that India had beaten Pakistan in the away series after their Australian tour.
Yuvraj also pointed out that India had lost four one-day games against Pakistan in recent times.
"There is a little bit of pressure on us," he said. "We are playing at home. We are not complacent.
"We will give 100 per cent. It would be a competitive tour. We will play good, hard cricket," he said.