EW reports that Tom Cavanagh and Steve Carell might head to Modern Family as Phil’s siblings.

Modern Family returns on January 6 with a brand-new episode called “Up All Night.”
The comedy opens 2010 with guest star Benjamin Bratt of Law & Order fame, who plays Manny’s father Javier Delgado. After he arrives in town, Manny begins to stay up all night, which causes his mother Gloria much grief when she realizes what’s going on.
Elsewhere, Claire is forced to get her husband Phil emergency treatment when a bout of kidney stones hits him, and Mitchell and Cameron have a difficult time training Lily to sleep.

Source: Comedy Centric