Jane Lynch - who plays cheerleading coach Sue Sylvester in the musical TV show - encouraged the 'Tiny Dancer' hitmaker to make an appearance in the series before finding out he had already met with the 'Glee' boss.
She told 'Access Hollywood': "I said, 'You should be on it!' And he said he and Ryan just had coffee or something and they talked about that, so that would be really fun."
Meanwhile, Matthew Morrison has admitted he "can't wait" to see the new episodes Gwyneth Paltrow has filmed where she reprises her role as substitute teacher Holly Holliday opposite his character Will Schuester in the Fox series.
He said: "I can't wait to see it. I was so excited. I haven't seen it yet, but we did a tango to Prince's 'Kiss'. It doesn't really blend to a tango, but we did our best.
"It was great to have her on the show again, it's such a blessing whenever we get to work with her."
Matthew recently revealed he thinks Elton would make a great boyfriend for Jane's manic 'Glee' alter-ego Sue.
He said: "We should find a spot for him to be on the show. That would be awesome. He's a living legend. He just brings such a great energy and a great validity to everything he does.
"He should do something with Jane Lynch. I think he should maybe play her boyfriend or some kind of love interest for her. I think that would be fun."
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