David Wright is taking his time ordering new business cards that include a Mets logo.

According to an industry source with knowledge of the discussions, Wright is a “50-50” proposition at best to sign a long-term extension with the Mets this offseason, as the two sides continue to negotiate a deal that would potentially allow the All-Star third baseman to finish his career in Queens.

The source said Wright is less than thrilled with the length of contract and amount of guaranteed money the Mets have offered. It could set up a game of chicken between Mets brass and Wright’s agents, Sam and Seth Levinson, heading to the winter meetings, which begin in two weeks in Nashville, Tenn.

The team’s general manager, Sandy Alderson, last week indicated he would be seeking clarity on the status of Wright and R.A. Dickey between Thanksgiving and the winter meetings as the Mets try to determine whether to lock up or potentially trade their stars.

The Mets and Dickey have discussed a two-year extension — among various other scenarios, according to a source — but it remains unclear if a new deal with the NL Cy Young award winner would eliminate the possibility he is traded this offseason.

A team official said he was “not sure” if a contract extension for Dickey would guarantee the knuckleballer isn’t traded this winter. The Mets have glaring holes in the outfield and at catcher and could look to deal the 38-year-old Dickey to fill those needs.

But in the aftermath of the Marlins unloading several stars, including Jose Reyes, to the Blue Jays — a deal that was finalized yesterday — the thought within the industry is Dickey might consider seeking some form of no-trade protection in negotiations with the Mets.

Wright, who turns 30 next month, is believed to be seeking a deal of at least seven years and $125 million that would give him the largest contract for a position player in franchise history.

Wright’s agents also could push for the Mets to tear up the $16 million option they recently exercised on the third baseman for 2013 and add a small amount — say $500,000 (making Wright’s new salary $16.5 million) — and allowing the sides to frame a new deal as including next season and pushing it beyond the $137.5 million contract Johan Santana received before the 2008 season.

But the two sides remain at a stalemate.

“Part of it is [COO] Jeff Wilpon tries to win every negotiation, he doesn’t go for the middle ground,” said a person familiar with the club’s negotiating tactics.

Wright has said he will not negotiate with the Mets beyond spring training, putting him in position to hit the open market next offseason if a new deal can’t be struck.