Juventus defender Leonardo Bonucci made no attempt to conceal his disappointment at his side’s tame display after the Bianconeri had to go to penalties to see off Inter and reach the final of the Coppa Italia on Wednesday night.

Leading 3-0 from the first leg of their semi-final tie, Juve were overwhelmed by Inter who scored three times without reply at the San Siro to level the game on aggregate but the cup holders prevailed on penalties to book their place in the final where they will face Milan on May 21.

“This is the worst game since I joined Juve six years ago,” the 28-year-old Bonucci said.

“We made our own lives difficult.

“It’s horrible to say it, but we’ve all got to take a long, hard look at ourselves.

“We were lucky to take it to penalties, then it was a lottery.

“We got our approach to the game completely wrong. Inter had nothing to lose and they threw everything forward, and we just made things easy for them.”

Juve coach Massimiliano Allegri agreed with Bonucci, saying his side had “not played at all for 70 minutes” and threatened he would have sent the players into a training camp for punishment had they thrown the tie away.

“It happened to me once with AC Milan when we won 4-0 against Arsenal in the first leg (of a Champions League round-of-16 tie) and at half-time in London, we were 3-0 down,” Allegri said.

“If we had gone out, there would have been the risk I would have taken everybody into a training camp. It would have been a crying shame to go out, without taking anything away from Inter. Of course, I should have prepared the game better.”

Despite the large margin of victory, Inter will not be heading to Rome for the final, much to the disappointment of their coach Roberto Mancini.

“We deserved to go to the final,” he said. “I’m really sorry for my lads – they were fantastic. We’re trying to do the best we can and we’re all disappointed to have dropped so many points (in the league), but this is football. I hope this game gives us back our belief and strength to finish third.”

The performance raised the spirits of Inter president Erick Thohir who said he was proud of the way the team fought back from their 2-0 defeat to Juve in the league at the weekend.

“That’s the Inter I want, the team I’ve always believed in, a team that can fight, play with character and wear the Nerazzurri shirt with pride,” he said on his club’s website.

“Well done lads, this is the way forward. Let’s keep it up now. I’m proud of you.”