It’s that time of the year again – the transfer window is now open until September 1 and it’s sure to be a busy period with clubs looking to make big signings ahead of next season. Here are today’s latest developments from Simon Jones and the Daily Mail Sport team…Chelsea sign Marc Cucurella replacement Chelsea have signed Rayo Vallecano left-back Pep Chavarria on a five-year deal for a fee of around £16.3m plus add-ons.The 28-year-old replaces Marc Cucurella, who signed for Real Madrid earlier this summer in a £55.8m deal.After signing his five-year deal, Chavarria told club media: ‘I’m so excited to get started.’This is a dream for me as Chelsea are one of the biggest clubs in the world. This is one of the best days of my life,’ added the 28-year-old.’It is a big opportunity but I am prepared and will work hard to help the team achieve success.’There are a lot of people who have helped me get to this moment and I have to thank my family. They have always supported me and today is only possible because of them.’ Chelsea have signed Rayo Vallecano left-back Pep Chavarria on a five-year dealToon press on with Benfica target Newcastle United are pressing ahead with talks to sign Amar Dedic from Benfica.The 23-year-old right-back played for new Newcastle boss Matthias Jaissle at RB Salzburg.Dedic has been capped 31 times by Bosnia and is valued around £25m.Newcastle continue to work on a new midfielder too.Click below for all the transfer developments over the last few days…TUESDAY: Roy Keane’s son-in-law linked with move to PortugalMONDAY: West Ham interested in free agent Jamie VardySUNDAY: Everton and Crystal Palace in advanced talks over McNeil-Johnson swapSATURDAY: West Ham and Tottenham agree £5m fee for Manor SolomonFRIDAY: Rodri tells Real Madrid he wishes to join Barcelona THURSDAY: Man City target new goalkeeper after James Trafford saleWEDNESDAY: Aston Villa braced for fresh Arsenal bid to sign Ezri Konsa