Sandro Tonali has officially bid farewell to Newcastle United, sending an emotional message to supporters after completing his record-breaking £100 million (€118m) move to Tottenham Hotspur.Tottenham Hotspur have completed their sixth signing of the summer transfer window, following the arrival of Sandro Tonali.The Lilywhites have been moving with great intent and have been the busiest of all Premier League sides since the summer window opened last month following consecutive 17th-place finishes.Five signings have already been confirmed, with Marcos Senesi, Mateus Fernandes, Jan Paul van Hecke, Andy Robertson and Martin Dúbravka all joining.Spurs have now finalised a sixth signing after agreeing a £100 million (€118m) deal with Newcastle United for Tonali. The Italian midfielder made the switch to Tyneside from AC Milan and, after three seasons in the Premier League, is set for a big-money move to north London.Photo by Serena Taylor/Newcastle United via Getty ImagesTonali sends farewell message to Newcastle fansWith the transfer now official, Tonali has taken to social media to send an emotional farewell message to Newcastle supporters.In an Instagram post, Tonali wrote:“Three years ago I came to Newcastle not really knowing what to expect. Today it is time to say goodbye and it is hard to find the right words. “I want to start by thanking the club. To the people who work every day and nobody sees at the training ground, everyone who welcomed me and made me feel at home from the very first day. “Thank you to the staff and my teammates for believing in me and helping me grow. A special mention to the gaffer, Eddie, who has been a real guiding figure and who always had my back throughout this journey.“But above all, I want to speak directly to the fans. When things were hard for me, you were there. Not for one day did I feel alone. I felt it every time I was at St James’ Park. “That is something I will carry with me for the rest of my life. Together, we achieved something this city had been waiting decades for. At Wembley that day, it was special, a historic moment we got to share together. “To the fans who never stopped believing, who never stopped cheering for this club, who were there in the hardest times, that trophy was for you.The game brought me to Newcastle. “Today I leave with my wife and our son, born during my time here. This city gave me more than football. It gave me a home, moments I will hold onto forever, and people I will always be grateful for. Thank you for everything. Sandro” View this post on Instagram A post shared by Sandro Tonali (@sandrotonali)Why Tottenham believe Sandro Tonali is the right signingTottenham have every reason to believe that they have secured a player who will improve them.Sandro Tonali has spent several years playing at the highest level, developing into a versatile midfielder capable of operating as a deep-lying playmaker or as a number eight. He is an intelligent passer of the ball, one who progresses play up the pitch, and his arrival is certain to strengthen an area of the Spurs team that struggled last season.READ MORE: Roberto De Zerbi reveals why Tottenham broke their transfer record for Sandro TonaliThe post ‘It is time to say goodbye’ – Tottenham midfielder explains exit to his former fans appeared first on Spurs Web.