Inter Milan boss Walter Mazzarri has admitted that he has been frustrated by his side's season, despite securing Europa League qualification on Saturday.

Inter confirmed European football for the club with a 4-1 win over Lazio, which saw veteran Javier Zanetti make his final appearance at San Siro.

However, Mazzarri was unhappy after the game, citing a "tricky year" and hinting that he will need backing in the transfer market ahead of next season.

"This is a tricky year for me, I had to really struggle and I'm a little tired," Mazzarri told Sky Sport Italia. "There is this final push and I used up a lot of energy, as we had so much to do. Let's wait for the final game (at Chievo next weekend), then I will explain exactly how I feel.

"Clearly we should inform people better of what kind of year this is. We tried, but nobody listened to us. Some of the difficulties were not helped by the media."

"We have a clear project in mind. One of the difficulties this season was we did all we could in the circumstances, dealing with the squad at my disposal. I will tell the club my ideas and then we can plan for next season."

Inter currently sit in fifth place in the Serie A table.