The 27-year-old's current contract at Stamford Bridge runs until 2020, but talks over an extension have so far proved fruitless amid speculation linking the Belgian with a move to Real Madrid.
Hazard has insisted that he remains happy at the club, but challenged them to strengthen this summer if they are to breach the 30-point gap which separated them from champions Manchester City this season.
Asked what would convince him to sign a new contract, Hazard told reporters: "I'm waiting for new players next season. I want good players because I want to win next season the Premier League.
"That's why I'm taking my time. It's something big. I need to think about a lot of things. One thing I'm sure is that I'm happy here."
However, Hazard seemingly ruled out the possibility that Saturday's FA Cup final against Manchester United could be his final game for the club.
"I think it's not my last game. It's the last game of the season, that's it. For me in my mind I'm here. I have one week to play now. Saturday is a massive game. I just want to win," he added.
"We're Chelsea. We need trophies at the end of the season. At the moment we have nothing. We have not qualified for the Champions League. So the season has been bad. If we can't be in the Champions League we need the trophy. It's up to us to save the season with the FA Cup. I've never won the FA Cup. I hope this year is for me and for Chelsea. We will give everything."
Hazard has scored 16 goals in 46 appearances for Chelsea across all competitions this season.