NFL commissioner Roger Goodell said Monday that mayors in Los Angeles and Chicago are pursuing hosting duties for the 2015 NFL Draft.

Goodell told NFL Network's Rich Eisen that Los Angeles mayor Eric Garcetti has joined Chicago mayor Rahm Emanuel in pitching their cities for next year's draft. Mayors from other cities also have been in contact with Goodell.

"We're looking at the potential of moving out of New York," Goodell said. "Radio City's been a great place for us, but there are a lot of cities that are interested in having us in the future, and we're going to look at that."

Goodell revealed last week that the NFL is considering expanding the draft to four days, and provided Eisen with clarification Monday.

Goodell said if the rule passes, it's possible that each of the first three rounds will get their own night. Rounds 4-7 would then take place Sunday. Under the current format, with the draft getting underway this week, Round 1 takes place on Thursday, Rounds 2 and 3 on Friday and Rounds 4-7 on Saturday.

---Florida State defensive tackle Timmy Jernigan and LSU quarterback Zach Mettenberger were among more than 10 prospects who were red flagged to NFL teams as having failed drug tests at the Scouting Combine for either testing positive for a banned substance or having a diluted urine sample, according to FOX Sports.

Jernigan is the No. 24 overall prospect and No. 3-rated defensive tackle in the 2014 class by NFLDraftScout.com, and is projected as a first-round pick.

Mettenberger is projected as a third- to fourth-round pick. His agent, Joe Linta, confirmed that Mettenberger was found to have a diluted sample, but that it was due to treatment for cramping. Linta provided a letter from a doctor at the time that outlined the course of treatment.

Earlier Monday, Miami offensive tackle Seantrel Henderson was identified as having tested positive for marijuana at the combine. LSU defensive tackle Anthony Johnson and Florida State linebackers Telvin Smith and Christian Jones were other players identified in the FOX Sports report.

---Carolina Panthers offensive tackle Byron Bell signed his restricted free agent tender, guaranteeing him $2.187 million for the 2014 season.

The 6-foot-5, 340-pound Bell, undrafted out of New Mexico in 2011, started at right tackle for the Panthers for most of last season. He could move to left tackle to replace the retired Jordan Gross.

---The New England Patriots signed free agent defensive end Will Smith.

Smith, 32, is a veteran of 10 NFL seasons with the New Orleans Saints (2004-13) after joining the team as a first-round draft pick (18th overall) out of Ohio State in 2004. The 6-foot-3, 282-pounder was released by the Saints on Feb. 12.

---The dates and kickoff times of the 65-game NFL preseason schedule were announced, beginning with the annual NFL/Hall of Fame Game between the New York Giants and Buffalo Bills in Canton, Ohio on Sunday, Aug. 3.

Televised live at 8 p.m. ET by NBC, the NFL/Hall of Fame Game is the first of eight national preseason telecasts carried by NFL broadcast partners CBS, ESPN, FOX and NBC that will feature eight 2013 playoff teams.

--- Detroit Lions general manager Martin Mayhew said the team has no interest in trading defensive tackle Ndamukong Suh.

"We're not looking to trade him. We have no plans to trade him," Mayhew said. "I haven't had any conversations with anybody about trading him except in January, I did get a call from a team that had an interest. Offered me a box of old tube socks and I said no thank you."

---University of Texas defensive coordinator Vance Bedford questions whether former Texas A&M quarterback Johnny Manziel can be a success at the NFL level.

Bedford, who has experience as a defensive coach in the NFL, said via Twitter than Manziel must still learn to play quarterback.

"Manziel is a top 10 pick by the scouts. I wish him the best. He played backyard ball for 3 years. Now he will have to learn how to be a Qb," Bedford wrote. "How many spread Qbs have success in the NFL. You must play under center."

---Defensive end Alejandro Villanueva, a first lieutenant U.S. Army Ranger, signed a rookie free-agent contract with the Philadelphia Eagles.

Villanueva, 25, spent the last four years as an active member of the Army. He served in three tours in Afghanistan. He last played football in 2009 at the U.S. Military Academy as a wide receiver. He also played some snaps at left guard, tight end and defensive end in his four years.

Villanueva (6-foot-9, 277 pounds) tried out with the Cincinnati Bengals after graduation but would not have been able to stay if he made the team because of strict service regulations.

---The NFL is expected to reinstate long-suspended Washington Redskins safety Tanard Jackson on Tuesday, according to CBSSports.com.

Jackson last played an NFL game in 2011. He signed with the Redskins before the 2012 season and was suspended indefinitely by the NFL that August for violating the league's substance-abuse policy.

---The Denver Broncos signed free agent defensive tackle Marvin Austin. The 6-foot-2, 312-pounder has played in 11 NFL games with the New York Giants (2011-12), Miami Dolphins (2013) and Dallas Cowboys (2013). He has recorded 10 tackles (7 solo).

---The St. Louis Rams signed wide receiver T.J. Moe, who was released by the New England Patriots. Moe, 23, played collegiately at the University of Missouri and attended high school in O'Fallon, Mo.