Chelsea scouts will be in attendance at White Hart Lane this week to watch Benfica star Lazar Markovic.
According to The Independent, Chelsea officials will use Benfica's Europa League match against Spurs on Thursday night to run the rule over Markovic, the talented 20-year-old playmaker.
Several reports have claimed in the past that Chelsea have a first-option agreement with Benfica for the young Serbian international. That reportedly allows Chelsea to sign him for just £12.5m if they want to - although Markovic's release clause for other clubs is thought to be £33m.
The highly-rated midfielder was linked with the Stamford Bridge club while he was at Partizan Belgrade, but he moved to Benfica last summer and has continued his development impressively.
He's thought to favour another season in Portugal rather than a second move in as many years.
Chelsea and Benfica have a close relationship having worked on several transfers between the clubs in recent seasons.
Chelsea bought Ramires and David Luiz from the Portuguese club, while Nemanja Matic left the Blues for Benfica in 2011, only to return in the January transfer window.
Chelsea have plenty of options in Markovic's preferred position, with Jose Mourinho able to call on the likes of Eden Hazard, Oscar, Willian and Andre Schurrle.