The former Lazio captain was only days into the move when Mancini left.
Candreva said, “The whole club wanted me, obviously with the all-clear from Mancini too. It's a shame I didn't get to know him better, because when I arrived I was recovering from an injury.
“Now there's the new Coach, who made a wonderful first impression on the squad and we really want to amaze people so they can celebrate like in the old days.
“De Boer is very good at preparing for matches in training. We want to take command in every game and keep the ball."