The 26-year-old Pagan batted .264 with four home runs and 21 RBIs for Chicago last year.
Pagan was originally drafted by the Mets in the fourth round in 1999. He was traded to the Cubs for cash in January 2006.
The 25-year-old Coles rose to New York's Triple-A affiliate last season, but spent the bulk of his time at Double-A Binghamton, where he hit .296 and stole nine bases.
Meyers is a 22-year-old who had 13 saves and a 2.14 ERA in 33 games at Class A Savannah. He struck out 48 and walked 14 in 42 innings.