"We made a £1.5 million offer on Friday night but they said we could only have Lua Lua, not Griffin for that fee, but we said we want both of them or nothing" Pompey chairman Milan Mandaric told Sky Sports News.
"Our offer was for two players, not one and now I will talk to my manager to see if it's possible for us to move forward tomorrow.
"We rate Griffin very highly but unless Newcastle make a move on this it won't happen.