Vollmer was a second round selection of the Patriots. (AP)

A source confirmed to WEEI.com this afternoon that second-round pick Sebastian Vollmer has officially signed a contract with the Patriots. Vollmer, an offensive tackle out of Houston, was the 58th overall pick in the 2009 draft.

Terms of the deal were not disclosed, but it’s realistic to think that it’s a four-year contract. Another second-round pick who signed recently with New England (Darius Butler) agreed to a four-year deal. In addition, sources indicate that the deal the Patriots are currently negotiating with another second-round pick (Ron Brace) is also for four years.

The 24-year-old Vollmer is fifth of New England’s 12 draft picks to agree to a contract — fellow second-round pick Butler, fourth-round selection Rich Ohrnberger, sixth-round pick Myron Pryor and seventh-round pick Darryl Richard are all in the fold. In addition, WEEI.com reported Thursday afternoon that Brace is expected to have a signed deal by the end of the week.

A 6-foot-7, 312-pounder, Vollmer — nicknamed “Sea Bass” — is one of the most unique picks in franchise history. A native of Germany, he did not start playing football until he was 14 years old, but would go on to help his German school win a pair of national football titles. At Houston, he started as a tight end before making the switch to left tackle, where he would develop into a All-Conference USA first teamer as a senior. He likely projects as a left or right tackle in the NFL.

“Vollmer is a big offensive tackle. He’s played both sides,” Patriots coach Bill Belichick said shortly after he was selected by the Patriots. “He’s played left side and also played right side at the East-West game.”