CBS relented last season by letting Neil Patrick Harris appear on Fox’s "Glee," but don’t expect it to happen again, reports E! Online.
Despite his getting an Emmy nomination for his guest role–or maybe because of it–CBS is apparently holding Harris to the terms of his contract as a star of "How I Met Your Mother," which restricts him from turning up on the competition.
Harris is also nominated for an Emmy as a supporting actor in “Mother” this year–as he has been every year since 2007.
Harris told E!, "I have bosses that make me sign contracts to keep me at one place for a long period of time, and understandably so. I love the [‘Glee’] gig, love doing it. … And they didn’t shoot me at the end of the first episode, so if I’m ever able to come back I’d love to."