By Will Butcher

Arsenal are on red alert after Greece international defender Kostas Manolas was involved in a scuffle during a Roma training session, according to a report.

Manolas, who has also been interesting London rivals Chelsea, engaged in a war of words with Holland international Kevin Strootman.

Italian news outlet Gazzetta World reported that Strootman vented his frustration at the Arsenal target, claiming he wasn’t putting enough effort in during the pre-season workout.

Arsenal manager Arsene Wenger is keeping tabs on the situation, as he looks to strengthen his permeable defence.

Football Insider revealed in April that Arsenal were eyeing Manolas two years after a deal to sign him collapsed.

The Sun claim Wenger has been quoted a figure of £37.5million to get his man, who has three years remaining on his Stadio Olimpico contract.

Doubts have been raised at the heart of Arsenal’s defence, with Per Mertesacker ageing, Laurent Kosicelny linked with a move to German Champions Bayern Munich and Gabriel’s performances considered a cause for concern.

The Gunners conceded 36 goals during the last campaign, which saw them fail to clinch yet another league title.

The centre-back replaced Mehdi Benatia at the heart of the Roma defence when he joined from Olympiacos in the summer of 2014. He has since been a regular feature for the club making 67 appearances to date.

Roma are reluctant to sell their star defender though. A clause exists in the defender’s contract which states that Roma will owe his former club Olympiacos, 50 per cent of his future transfer fees.

In other Arsenal transfer news, officials from the north London club have scheduled a meeting with this Argentina superstar’s representatives.