The 25 year-old is on a two month loan spell from Posh but is surplus to requirements at London Road and has been told he can leave.
And Geohaghon, who has formed a partnership with captain Ryan Cresswell in the absence of Nick Fenton, is eager to remain a part of Ronnie Moore's plans.
He todl Millers player: "I'm enjoying it here and I'm getting games now which is what it's all about, I'm getting to that point where I can just keep kicking on and if I go back to Peterborough I'm not going to play so hopefully I'll get to stay and we can keep pushing for the top three.
"I'd like to be here to the end to be honest."
The centre back added: "My loan's up at the end of the month but we haven't really spoken about it. If I go back then I don't know if there's another possibility of an emergency loan until Christmas.
"All I can do it keep playing, though the squad is nearly fully fit now so it's up to whether the gaffer decides to keep me on or not.
"I am happy to stay if he does want that but it's a decision that Rotherham United have to take on."
And Geohaghon, who has formed a partnership with captain Ryan Cresswell in the absence of Nick Fenton, is eager to remain a part of Ronnie Moore's plans.
He todl Millers player: "I'm enjoying it here and I'm getting games now which is what it's all about, I'm getting to that point where I can just keep kicking on and if I go back to Peterborough I'm not going to play so hopefully I'll get to stay and we can keep pushing for the top three.
"I'd like to be here to the end to be honest."
The centre back added: "My loan's up at the end of the month but we haven't really spoken about it. If I go back then I don't know if there's another possibility of an emergency loan until Christmas.
"All I can do it keep playing, though the squad is nearly fully fit now so it's up to whether the gaffer decides to keep me on or not.
"I am happy to stay if he does want that but it's a decision that Rotherham United have to take on."
Source: PA