The two-time Pro Bowl selection signed with the New England Patriots on Monday after 11 seasons with the New York Jets.
The Patriots also signed another former first-round draft pick, free agent defensive end Andre Carter, who has played 10 seasons with the San Francisco 49ers and the Washington Redskins.
"It feels like home," Ellis told reporters after practice. "It feels like a place that's all about winning, like they have been."
EAGLES: Two-time Pro Bowl wide receiver DeSean Jackson ended his 11-day holdout and reported to training camp. He didn't practice in the morning, but was on the field for the afternoon walkthrough.
"The relationship I have with the team and the front office, I think everything will work out," Jackson said. "I'm just going to keep everything positive."
RAVENS: Baltimore signed veteran running back Ricky Williams to replace Willis McGahee, who was let go days before training camp. The former Heisman Trophy winner, who played last season with the Miami Dolphins, agreed to a two-year deal.
LIONS: Running back Mikel Leshoure tore his left Achilles tendon, ending his season before it began. Detroit was counting on the second-round pick from Illinois to provide power in the backfield.
CARDINALS: Safety Adrian Wilson has a torn right biceps tendon and will try to rehabilitate the injury to avoid surgery that would sideline him for a longer period.
TITANS: Cornerback Cortland Finnegan has apologized to his bosses, teammates, fans and the media for bolting training camp.
He said he left because he was upset over talks for an extension, not the personal issue he mentioned defending himself about on Twitter. Coach Mike Munchak said Finnegan will be fined, and the cornerback said he will willingly pay.