What Porto boss accused Arteta of saying emerges as UEFA make decision

Porto boss Sergio Conceicao accused Mikel Arteta of using an offensive Spanish phrase which referenced his late mother after Arsenal's fiery Champions League win on Tuesday.

Conceicao and Arteta immediately came together after Arsenal's penalty shootout victory which put them into the last eight, and after jabbing his finger in the direction of the Gunners boss, Conceicao later hit out at him in his post-match press conference.

"He insulted my family and in the end I told him 'be careful', because whoever he insulted is no longer with us," he said. "He should worry about training his team more and better because he has a lot of individual quality to do so."

Conceicao's parents both died when he was a teenager, with his father dying in a tragic motorbike crash when he was 16 and his mother passing away from long-term health problems when he was 18.

The Porto boss declined to go further into what he believes Arteta said, but the Mail Online report that a source close to the former Portugal international believed it to have been the phrase "concha de tu madre", a phrase which literally translates as "your mother's shell" but is seen as a reference to a vagina in Spanish-speaking countries.

Arsenal issued a fierce defence of their manager and denied he said anything offensive to Conceicao. The Gunners boss declined to comment on the issue at his post-match press conference.

UEFA are unlikely to take any action over the incident, and Conceicao has a long history of making similar claims after previous defeats, including with Thomas Tuchel and Pep Guardiola.

But UEFA insist they are unlikely to step in unless a manager makes comments toward the officials and therefore no action seems likely.

Arteta would only talk about his side's