Frontman Dickson had a successful loan spell with Bristol Rovers earlier this season and right-back Moutaouakil has been linked with Swansea.
"At the moment, there won't be any incoming. We need a couple to go out to finance the Akpo Sodje deal," said Parkinson.
"We thought two were going to happen on deadline day, but they fell through at the last minute. Things are very tight financially, but there's a possibility of one, maybe two going.
"Yassin Moutaouakil and Chris Dickson are two players whom other clubs have expressed interest in, and we're waiting for that interest to be firmed up."