After striking out on aggressive plays for Jose Abreu, Brian McCann and Carlos Ruiz, the Rockies continue exploring multiple options to land an impact bat and bullpen arms. They have talked with the Angels about slugger Mark Trumbo, who will be hard to pry away, and called the Royals about their surplus of relievers.

The Rockies main trade piece is center fielder Dexter Fowler, who could be a fit in Kansas City. Opposing executives have said for weeks that the Rockies are open to trading Fowler. The Rockies have already talked with Carlos Gonzalez about playing center field if necessary.

The Kansas City Star reported recently that relievers Aaron Crow and Tim Collins are available, and Wade Davis is a candidate to be moved after the signing of free agent starter Jason Vargas. The Rockies tried to acquire Davis multiple times from Tampa Bay before the Rays shipped him to Kansas City last offseason in the James Shields deal.

Davis, 28, struggled last season as a starter (6-10, 5.67 ERA), but showed promise as a reliever (2-1, 0.90 ERA in seven games). Davis will make $4.8 million in 2014 and has three club options for 2015 through 2017.

Fowler was the Rockies’ best player in April, hitting eight home runs and serving as an offensive catalyst. Multiple hand injuries compromised his production in the middle months, and he started just three games in September because of a knee injury. Fowler will make $7.35 million this season, and has one arbitration year left before free agency.

Trumbo, 27, profiles for the Rockies, who are looking for an impact bat at either first base or right field. However, there are clear obstacles: He’s coveted by many teams, and the Angels would prefer to use Trumbo to acquire starting pitching.