"Det hopes to lock up miggy & max," Heyman said, also referring to slugger Miguel Cabrera, who has two years left on his contract.
Joel Sherman of the New York Post reported that Porcello, who made $5.1 million last season, will make $8.5 million this season; Jackson, who earned $3.5 million last year, will make $6 million this year; and Dirks, who made $505,000, will make $1.625 million.
Jason Beck of MLB.com reported that the Tigers and Alburquerque also agreed to a one-year deal for $837,500. Alburquerque made $500,000 last season.
That means catcher Alex Avila is the only arbitration-eligible player left to sign a deal.
Today is the deadline for teams and players to offer their proposed salary figures and if a deal is not reached by Feb. 1, arbitrators will choose between the two proposed salary numbers.
Since he came to Detroit in 2002, Tigers president and general manager Dave Dombrowski has not had a player go to arbitration.