The Los Angeles Angels have opened discussions with Mike Trout over a six-year, $150 million contract extension, according to Jeff Passan of Yahoo Sports.
Centre fielder Trout is widely considered the best all-round player in the MLB at the moment and at just 22-years-old, is tipped to sign the first $300m+ contract.
But Trout has a desire to remain with the Angels and both parties want to agree an extension this spring.
That willingness has led to the rapid progression of talks between the two parties with the Angels looking to extend Trout's free agency by two years, putting him into free agency as a 28-year-old.
There is still a gap between the two parties, however, with the Angels offering just over $140m. Officials from the franchise remain hopeful that they can bridge the gap between themselves and the player.
It is thought Trout could end up earning an average of around $25m a year, which would be by far the largest deal for a player with just two-plus years of service.
It could be an attractive offer for Trout, who would move into free agency in his prime, abling him to seek a mega-bucks deal with a team with a bigger budget.
After a stunning rookie season in 2012, in which he won the Rookie of the Year award, Trout bettered himself in 2013 hitting .323/.432/.557 with 27 home runs, 33 stolen bases and an AL-leading 110 walks.
In both his full seasons he has finished runner-up MVP.