Trainer Derek Ryan said he expects to decide by May 6, adding his colt will not run in the Belmont Stakes (gr. I).
Ryan said he likes the mile and three-sixteenths distance for the Preakness.
"It's shortening up a little bit and I want to run him in the Haskell," Ryan said before a press conference to trumpet this weekend's opening of Monmouth Park, the site of the $1 million Haskell Invitational (gr. I) Aug. 2. Ryan stables at Monmouth.
Musket Man, by Yonaguska, is owned by Eric Fein and Vic Carlson. He has won five of seven lifetime starts, his most recent victory in the Illinois Derby (gr. II) prior to the Kentucky Derby.