Middlesbrough are set to sign Justin Hoyte from Arsenal after their bid for the fullback was accepted on Thursday.
Hoyte, 23, will discuss personal terms with the Teesside club this week, but Middlesbrough are unlikely to complete the deal, believed to be worth around £3 million, in time for their Premier League opener against Tottenham Hotspur on Saturday.
Middlesbrough manager Gareth Southgate moved for Hoyte after selling England right-back Luke Young to Aston Villa earlier this month.
"We have agreed a fee with Arsenal and we have now been given permission to (speak to) Justin, which we will be doing in the next 24 to 48 hours," Middlesbrough chief executive Keith Lamb told the club's official website.
Hoyte, who was an unused substitute in Arsenal's midweek UEFA Champions League win over Twente, has made 68 appearance in five years with the Gunners.