Murillo Santiago Costa dos Santos, currently with Nottingham Forest, is the latest name linked with a potential switch to Arsenal. The midfielder could become a key signing should the move materialise, as the club seeks to strengthen in a key area of the pitch. Arsenal have laid out their intentions, but valuation and timing remain under debate. Bayern Munich, Chelsea and Barcelona are keeping tabs in case talks collapse or progress slows further. So far this season, Arsenal are steady at both ends (1.82 goals scored per game, 0.45 goals conceded per game). The role for Murillo Santiago Costa dos Santos would be to keep that balance while lifting performances across the pitch. Speculation continues to connect Arsenal with Robinio Vaz, Jean-Philippe Mateta and Kobbie Mainoo while no fresh rumours surround Nottingham Forest. Follow us on Twitter @PlayerSwitchCom and get the latest Arsenal transfer news and rumours direct to your feed.