Chelsea will check on Middlesbrough defender Ben Gibson on Saturday as Antonio Conte steps up his search for defensive reinforcements.
Blues spies are scheduled to run the rule over the promising 23-year-old against in-form Arsenal this weekend.
With the likes of Alexis Sanchez, Mesut Ozil and Theo Walcott all likely to be involved at the weekend, Chelsea scouts feel the clash at the Emirates Stadium will provide them with a perfect opportunity to grade Gibson's progress.
The central-defender is one of a number the Blues are keeping an eye on as they look to bolster their options in the back four.