Newcastle are set to make Benfica right-back Amar Dedic their sixth signing of the summer, talkSPORT understands.The 23-year-old Bosnia and Herzegovina international will undergo a medical with the Magpies on Sunday.Dedic has been identified by Newcastle to be Kieran Trippier’s replcaementGettyIt is believed that the deal is worth £30million, with Newcastle beating several clubs – including from the Premier League – to Dedic’s signature.The former Red Bull Salzburg player, who can operate in both full-back positions, has made 46 appearances for Benfica since joining the Portuguese giants last summer.He also played three games at the 2026 World Cup as Bosnia reached the knockout stage for the first time.Dedic is poised to become Newcastle’s first defensive acquisition of the transfer window – one which has seen the Magpies have to rebuild generally amid the departures of Anthony Gordon, Sandro Tonali and Bruno Guimaraes – and right-back Kieran Trippier.With head coach Eddie Howe also stepping down to be replaced by Matthias Jaissle, it’s a summer of big change at St James’ Park.Dedic might not be Newcastle’s final signing between now and deadline day on August 31, however.Former Fulham and Tottenham defensive midfielder Joao Palhinha, now at Bayern Munich, could make a return to the Premier League – with Newcastle potentially getting revenge on Aston Villa after they hijacked the Magpies’ move for Johan Manzambi.What has been said about the Joao Palhinha transfer saga?“And Joao Palhinha could still be one to watch,” talkSPORT’s Ben Jacobs explained on the Sunday Edition with Shaun Custis and Henry Winter.“So, we knew from last week that Palhinha would have liked to go to Aston Villa. “Villa were offering a loan with a buy option, Bayern said permanent transfer only.Palhinha was a key player on loan at Spurs last termGetty“So, if Villa want to come back on that one and revive their interest, they need to make sure it’s a permanent transfer – and if they did that, then Palhinha likes Villa.“But at the moment, they haven’t done that and Newcastle are prepared to make a permanent offer for Palhinha.“And he would like to stay within the Premier League even though he has interest from Benfica as well.“So, we might see another experienced and Premier League-ready midfielder arrive at St James’ Park between now and the end of the window. “In fact, we will – it’s just a case of whether it’s going to be Palhinha or another name.”Portugal international Palhinha joined Bayern from Fulham in 2024, but returned to the Premier League with Spurs on loan last season, scoring five goals in 33 appearances.Palhinha featured in 33 Premier League matches last season – starting on 23 occasionsNewcastle conclude their pre-season with a friendly against Strasbourg on Sunday – the second of a double-header at St James’ Park which began with a 2-1 loss to Bayer Leverkusen on Saturday.The Magpies kick off the 2026/27 campaign at home to Liverpool next Sunday (August 23).