By Peter Brennan

The fourth pick in this year’s NFL draft can be had for the right price. The New York Giants are “open for business,” according to general manager Dave Gettleman.

Let’s hope Eagles big boss Howie Roseman is paying attention.

Because if the Eagles want to move up from their 21st spot in April’s draft in order to take a game-changer like Alabama WR Henry Ruggs III, here’s the chance.

The Giants join the Detroit Lions, who pick third overall in this April’s draft, as teams willing to at least listen to offers. Lions general manager Bob Quinn recently said he would be “open to any trades.”

The Lions and Giants appear to be in the sweet spot if the draft plays out as expected at the top and quarterback-needy clubs fall in love with Alabama’s Tua Tagovailoa or Oregon’s Justin Herbert. That would make the third and/or fourth picks especially valuable.

“Absolutely we’re open for business,” Gettleman said on yesterday at the NFL combine. “Again, whatever we do is going to be in our best interest. Trading back has its danger. What happens if … we’re at four. Let’s say we trade back to eight. There are only four players that we like. What if they’re all gone? Now what are you going to do? Trade back again? You can trade yourself back out of good players.

“But, to answer your question, we’re open.”

Trading down is also rare for the Giants. Per ESPN Stats and Information research, the only time the Giants have traded down in the first round in the common draft era (since 1967) was in 2006, when they sent the 25th pick to the Pittsburgh Steelers (who selected receiver Santonio Holmes) in return for the 32nd pick (the Giants selected Mathias Kiwanuka) and two additional picks in the third and fourth rounds.