"We've been going back and forth since last week," said Lansanah, a Bucs linebacker. "Me and him became real tight. So we've still got our friendship. I'll talk a little trash to him."
The Bucs' Week 7 trip to FedEx Field will be a reunion of sorts for some Tampa Bay defenders. In addition to Foster, who was a linebacker for the Bucs from 2011 to 2014, former Bucs safety Dashon Goldson also plays for the Redskins after spending the 2013 and 2014 seasons in Tampa.
"Two great leaders," Lansanah said. "Dashon Goldson on the back end, he was always talking and communicating. Mason at the linebacker position, playing middle linebacker, you've got to be either talking or communicating. Two great guys on the field and off the field."
Goldson and Foster left the Bucs in different ways.
Goldson, a two-time Pro Bowl player, was traded in April for a 2016 sixth-round pick. The Bucs also included a 2016 seventh-round selection in the deal, after Goldson failed to live up to the expectations that came with his five-year, $41.25 million contract.
Foster was allowed to walk in free agency. He signed a one-year deal with the Chicago Bears in March, but the team terminated the deal on Sept. 5 in a somewhat surprising move. The Redskins signed him on Sept. 29.
"I really enjoyed, personally, working with the both of them," Bucs defensive coordinator Leslie Frazier said. "They are pros' pros. Those guys worked hard when they were here. Mason did a good job for us trying to learn a new system and trying to get integrated into it, which was not easy for him, nor for a lot of other guys. But they gave us everything that they had when they were here. Dashon, he's a ball-hawking guy. I wish them nothing but the best."
Still, the Bucs have moved on. Safety Chris Conte signed a one-year deal with the team in March, and rookie Kwon Alexander won the middle linebacker job in training camp. Alexander ranks second on the team in tackles with 32 and Conte is third with 28. They each have one of the Bucs' three interceptions.
Doors closed, but others opened. On Sunday, Goldson and Foster will have a chance to revisit their past.
"They've done a good job," Washington coach Jay Gruden said in a teleconference with Tampa Bay media. "Dashon has come in here, [and] he's been an instant leader. He's our captain. [He] was voted a captain before the season started, and he runs the show [in the defensive backfield].
"Mason just got here a couple weeks ago and he's had an impact on our special teams. He hasn't had to play a lot of linebacker yet, but he's right in line to play that. He's really been a help on special teams so far. They're both good guys, play hard, and are welcome additions to our football team."