New Inter Milan coach Walter Mazzarri feels title rivals Juventus will be stronger next season.

Mazzarri is wary of Juve's impressive summer market campaign.

"Juventus were already strong, very strong," he told La Domenica Sportiva. "And now they've strengthened further.

"They're even more complete. They had a fantastic season last time out. They did well in the Champions League up to a certain point and they'll be able to hold their own next year too."