Speaking at his final pre-match press conference of the season, Allardyce attempted to clarify Rooney's situation and revealed that the ex-England skipper is free to leave should he wish.
Reports in England suggest that Manchester United's all-time leading goalscorer Wayne Rooney could be the latest star join up with the likes of Zlatan Ibrahimovic and David Villa in Major League Soccer.
"I don't get involved in anything with regards transfers, so all I know is there appears to be interest from D.C. United", Allardyce told reporters.
"Only after I've spoken to him today will I find out where the situation actually lies".
I am always comfortable if any player player wants to leave or if any player doesn't want to leave. "Wayne is a special player but if any player wants to leave they can, in my opinion". Whether they can or can't is another matter.
"I have a one-year contract and until some time somebody says to me "I do not want you to fulfil that contract" then I have a contract", he said.More news: Wilfried Zaha Set For A £50m Move To Man City
Rooney moved to Everton from Manchester United in 2017.
The speculation has mounted with rumours of a rift between the player and Allardyce, stemming back to the goalless draw in the Merseyside Derby in April when Rooney was visibly unhappy with being substituted.
"How can anyone be guaranteed playing time next season?" asked Allardyce. "He's never got carried away and that's why he's played so well and achieved so much".
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In recent talks with Moshiri, veteran boss Big Sam laid out his plans for next season - and he doesn't see Rooney figuring in the first team.