"I think it is 50-50," said Carew.
"The fans certainly could not have done any more."
The Norway striker continued: "Gareth is a good professional and a great player.
"He can handle any situation and I am happy to see him playing again.
"The reception he received did not surprise me but I know he can adapt to any situation.
"We have all been in the game for a long time, so we don't waste too much energy thinking about whether the crowd is being positive or negative.
"He will just go out there and do his job in exactly the same way as he always does and we will just wait to see what happens."