If Tom Coughlin is going to stay off the NFL sidelines in 2016, it will not be, to use one of his favorite phrases, because he feels “remorse for opportunity lost.’’

Coughlin is going for it. He met Tuesday with the 49ers about their head coaching vacancy, a day after he interviewed with the Eagles, who are looking for a replacement after firing Chip Kelly with one game remaining in the season.

If Coughlin and the 49ers do not seem like a match made in football heaven, so be it. Coughlin, 69, has no time to waste. He will not jump at any job, but he cannot create openings that are not there. Coughlin became the sixth candidate to interview for the 49ers position that, for only one year, belonged to Jim Tomsula.

Coughlin’s meeting with the 49ers was first reported by NFL Network. He spoke with general manager Trent Baalke, who has close ties to Bill Parcells — as does Coughlin. Baalke was a scout for the Jets when Parcells was their head coach. Coughlin, of course, was a receivers coach for Parcells with the Giants.

Baalke and owner Jed York could be in the process of building a Parcells-infused hierarchy. They already have Eric Mangini and Tony Sparano — both former Parcells assistants — on their coaching staff.

The 49ers previously interviewed John DeFilippo, the Browns offensive coordinator, for the head coaching job. DeFilippo was with the Giants in 2005 and 2006, working as the offensive quality control coach for Coughlin.

Reports were rampant the past few days the 49ers were targeting Bengals offensive coordinator Hue Jackson for their head coaching opening, but the San Jose Mercury News reported the 49ers have “pulled out’’ of the running. The Browns had a second interview with Jackson, who is scheduled to interview with the Giants on Thursday, if he is still available.