Tottenham Hotspur manager Mauricio Pochettino admits his side have struggled to cope with the twin demands of playing in the Premier League and in Europe after their shock exit from the Champions League.

Former Norway international left-back John Arne Riise, who played for top European clubs including Liverpool, Monaco and AS Roma, announces he is retiring from football.

Colombian striker Radamel Falcao confirms that he is returning to Monaca, where he played in 2013 and 2014, after two mediocre seasons on loan at Manchester United and Chelsea.

Russian online security specialist Eugene Kaspersky says cybercriminals will one day go for bigger targets than PCs and mobiles, sabotaging entire transport networks, electrical grids or financial systems.

In the midst of a frustrating start to the season, Jose Mourinho returns to Portugal on Tuesday as Chelsea face his old side FC Porto in the Champions League.

A virtuoso performance from Sergio Aguero led Argentina to a 7-0 friendly win over Bolivia in Houston.

Chelsea sign Monaco striker Radamel Falcao on a season-long loan deal, with the option to make the deal permanent.

The July 12 event will also feature performers Lemar and Justin Caldwell in an exclusive event for the some 37,000 residents of the world's second smallest state behind the Vatican.