Journalist Claims That Arsenal Have Been Keeping Tabs on Portuguese Star for 'a Number of Years'

​Arsenal have been keeping their eye on Sporting CP winger Gelson Martins for a number of years, according to journalist Duncan Castles. The north London side are being heavily linked with a move for the Portugal winger, as new Arsenal boss Unai Emery looks to bring in reinforcements at the Emirates Stadium ahead of the coming season.​ The speculation linking Martins to Arsenal as heightened in recent days, with ​reports claiming the 23-year old has cancelled his contract with Sporting... Via All the latest breaking football news, transfer rumours, analysis, and match reports - 90min http://www.90min.com/