Bristol Rovers midfielder Lines, 25, and 28-year-old South African defender Gould, who currently plays for Supersport United, have been training with the Eagles all week.
"They've been doing well," said Freedman.
"Chris has done well for himself having come from Bristol Rovers - he's impressed me.
"We've got Morgan over from South Africa and he's done well as well. He's an international player, a little bit older, and he's not let himself down either."