According to The Scottish Sun, Sunderland have tonight agreed a £2m fee with Celtic to sign Welsh international right back Adam Matthews.
The Black Cats are expected to be active in the transfer market this summer, with manager Dick Advocaat keen to strengthen his squad following last season's relegation battle.
The Dutchman will be looking for more additions having signed Liverpool defender Sebastian Coates permanently earlier this week, and it seems that another defender is on his wish list.
The Scottish Sun believe that Celtic right back Matthews, 23, has been the subject of a bid from Sunderland - and the Bhoys have accepted the offer, having initially rejected an offer worth £1.5m from Advocaat's men earlier in the week.
Having signed Manchester United right back Saidy Janko on Wednesday, it always seemed that Matthews' days at Celtic Park could be numbered, and the former Cardiff City man could now be set for a move to the Stadium of Light this summer.
For Sunderland, Matthews would likely arrive to compete with Billy Jones for the right back spot in Advocaat's first team, with another option needed after releasing Frenchman Anthony Reveillere.
Celtic's signing of Janko means that Matthews would have to battle with the new arrival as well as Mikael Lustig, and the move should bring in some money for manager Ronny Deila to spend.
It seems like a great deal for both sides, though there is still some work to be done before Matthews can become a Sunderland player - but Celtic accepting a bid means the deal is now in progress.