Sebastian Vollmer’s new contract with the Patriots falls right in line with his market value.

The right tackle finalized his deal yesterday, and it’s worth a maximum of $27 million over four years, according to a source. There is $8.5 million in guaranteed money and a $7 million signing bonus, so the Patriots have also protected themselves in the event of injury, which makes it a good agreement for both sides because Vollmer will be paid in line with comparable players if he remains healthy and continues to perform at a high level.

With the deal, the Patriots will return their entire starting line from last season, and tackles Will Svitek, Marcus Cannon and Markus Zusevics will enter camp trying to win a spot as a backup. Since $500,000 of Svitek’s $1 million deal is guaranteed, his spot would appear to be safe, and that could mean Cannon might get additional reps at guard to maximize his value.

For Vollmer, he landed a contract that was consistent with a crowded market. The free agent tackles behind Jake Long averaged between $6 million-$8 million in average annual value, and Gosder Cherilus (five years, $34 million with the Colts) got the most money among the pure right tackles. If Vollmer reaches his max value, he’ll average $6.75 million per season, a tick below Cherilus.

Again, Bill Belichick has proven he’ll invest heavy assets on offensive tackles, and both Vollmer and the Pats can feel good about this contract.

Demps’ split time?

Jeff Demps might not be on the right track with the Patriots.

The running back and Olympic silver medalist has continued his career in track and field, but his football future remains a great unknown. Demps agent, Daniel Rose, told the Herald yesterday the Pats haven’t returned any of his messages for three weeks.