Everton have confirmed on their official Twitter account that Brazilian right back Felipe Mattioni is currently 'working with the club' in the hope of winning a contract.
The Toffees have endured a number of defensive injuries already this season, with manager Roberto Martinez forced to use a makeshift back four of Tyias Browning, Phil Jagielka, Ramiro Funes Mori and Brendan Galloway during the 3-2 win over West Bromwich Albion on Monday.
Manager Martinez may now look for defensive reinforcements outside of the transfer window, given that he is currently without the likes of John Stones, Seamus Coleman and Leighton Baines.
One player hoping to impress the Toffees is Brazilian right back Felipe Mattioni, who played for Everton in an Under-21 game against Norwich City on Monday.
Mattioni, 26, was a surprise inclusion in the Everton side as they beat the Canaries 3-1, prompting fans to ask whether he was a new signing - but the official Everton Twitter account responded by confirming that Mattioni is currently 'working with the team'.
The Brazilian, who has played for Gremio, AC Milan, Real Mallorca and Espanyol, has had his career blighted by injuries, and has played just over 50 games during his injury-hit career so far.
Signing a right back would ease some of the pressure on the Everton defence, and manager Martinez is no doubt looking to see how fit Mattioni currently is before pursuing any permanent deal for the defender.