Simone Inzaghi's team will face Lazio in the last eight after first-half goals from Marko Arnautovic and Kristjan Asllani, who whipped in his first goal of the season straight from a corner.

Asllani was one of eight changes to the Inter team which smashed Lazio 6-0 in Serie A on Monday night, and scored almost immediately after play was stopped for a few minutes for a medical emergency in the crowd.

The hosts then decided to see out the match rather than treat Udinese as they did Lazio, although Mehdi Taremi missed a great chance to add to his one goal scored this season when he struck the post one-on-one with Omri Glazer in the 77th minute.

The only potentially bad news for Inter was Lautaro Martinez being treated for what looked like a knee injury on the final whistle, although there was no indication of its seriousness.

The quarter-finals will be played as single-legged ties in February.

Inter are three points behind Serie A leaders Atalanta with a game in hand and face Como and Cagliari in their final fixtures of this year.

They will then jet off to take part in the Italian Super Cup in Saudi Arabia, where they will face Atalanta in the semi-finals on January 2.