The Marlins are asking for at least two-three top prospects in exchange for starting pitcher Josh Johnson, ESPN reported.

“They’re asking for a ton,” an American League general manager told ESPN.

The Red Sox are one of the teams reportedly interested in pursuing Johnson. Other teams include AL East rivals Blue Jays and Orioles.

He is also one of the most appealing starting pitchers on the block, as Cole Hamels is locked up with Philadelphia, Matt Garza is suffering from injuries, while Zach Greinke and Ryan Dempster are free agents at the end of the season.

This season the 28-year-old is 6-7 with a 4.14 ERA in 20 starts and is under contract through next season.