The Tigers are positioned to be one of the most intriguing sellers in baseball ahead of the July 31 Trade Deadline, and sources said this week the team is open to moving virtually any veteran on its roster.

In other words, now that the Draft is over, the Tigers will listen to offers for starter Matthew Boyd, closer Shane Greene and right fielder Nicholas Castellanos, among others.

The Tigers are in the second full season of a rebuild, with a pitching-rich farm system likely to deliver an above-average Major League rotation to Detroit by 2021. The Tigers aren’t motivated to move contracts for financial reasons, as their payroll already is roughly 40 percent lower than on Opening Day two years ago.

Instead, the front office is pursuing baseball trades that could strengthen the team’s roster for 2021 and beyond. With Boyd, Greene and Castellanos, general manager Al Avila should have ample proposals to consider in the coming weeks.

Boyd, 28, likely represents the Tigers’ most difficult decision. The left-hander has emerged as an All-Star candidate this year, ranking among the top 10 in the Majors with 105 strikeouts while posting a career-best 3.08 ERA. Boyd also is revered in the organization for his clubhouse leadership and philanthropic work.