Luis Guilherme Lira dos Santos is confirmed to be the subject of advanced talks between Sporting and West Ham, who are negotiating terms ahead of a possible transfer. The midfielder has long been on the radar of Sporting, who see him as the perfect addition to their squad as they look to strengthen a key area of the pitch. Progress on talks has been made, though a final agreement is not yet in place and other clubs are said to be weighing-up whether to join the race for his signature. Negotiations are still active, and with no other teams linked, Sporting appear to have a clear path to completing the deal. Sporting look balanced this season - 2.71 goals scored and 0.5 goals conceded per game. Luis Guilherme Lira dos Santos would be expected to bring control and consistency to help push them to another level. West Ham have recently been linked with Haji Wright, Artem Dovbyk and Souffian El Karouani while Sporting have had no rumoured targets. Can't get enough Sporting transfer rumours? Follow @PlayerSwitchCom on Twitter for the latest transfer news as it happens.