No one really knows what Ford's current feelings about playing Han are. When asked about it in the past Lucas said he would not make any sequels. So Ford really had no choice. He was just giving his feelings comparing Han to Indy. That in the OT Han filled his supporting role and had no where else to go.
But a sequel would show a very different Han Solo. At least 30 years older. He might be open to the idea now that its a real option and the character would be developed differently.