"Roberto's quality was clear for all to see when he galvanised the squad last season and helped the club make history, and the owner and board are very pleased he will be continuing his good work.
"We all believed he was a young coach with much to offer when we first asked him to take charge of team affairs in March and the manner in which he worked with us, the players and all the staff, and the success that followed, made him the clear choice when it came to selecting the person to take us forward in the seasons to come."
More top news
The emotion of Donald Trump's inauguration was too much for Jessica Starr, who told ITV News: "I'm so sorry... this is not America."
Prince William and Kate have announced they are to become 'full-time' Royals as they move their family back to London from Norfolk.
Jobs for Americans, a strengthened military, new trade deals and support for police will shape Donald Trump's four years in government.