Both players missed much of last season due to injury.
Carver told the Evening Chronicle: "Both Dan and Hatem will be back and up to scratch for the new season.
"Dan is going to the US first to have a family holiday, then he'll do some warm weather training before joining us for the games in the States.
"It's the same for Hatem. Last season we knew there was no point in risking anybody once we were safe.
"Dan and Hatem looked really good in training."