Hamilton, who competes in McLaren from 2007-2012, is fighting for Mercedes since 2013, and the deal ends at the end of the season.
Ferrari and Red Bull will have empty seats for the 2019 season, and Red Bull has revealed the interest of British pilots. But Ferrari, who has signed up to 2020 with Sebastian Vettel, is not expected to sign a contract with Hamilton at least until the end of the deal.
On the other hand, there are rumors that Hamilton will make a two-year deal worth £ 40 million a year.
When Hamilton's deal is over, Vettel will sign a deal with Ferrari, and according to Wolff, Ferrari can sign an agreement with the British pilot.
Mercedes' team boss, "Lewis is the best pilot of the modern generation, of course we want to keep him in the team for as long as possible."
"But we can do at least one deal out of the current deal, and we know that Ferrari continues to be an attractive place for every driver."
"The relationship we have has always been strong, but everything can happen throughout the season, and the situation can become tense." said.
The British pilot said that in the past few weeks, his team wanted to sign a new deal in front of Melbourne.