"I didn't go back to Chelsea for as long as they said I would go back for," Cork told the Scunthorpe Telegraph.
"They told me I could stay there, train with the reserves and hopefully get a few chances with the first team. Or I could go back out on loan and play games.
"They thought staying with Scunthorpe would probably be the best option.
"They've come here and seen the club and know how much I've liked it here so it was a good idea to come back and play some more games.
"It was nice to go back, see everyone and say hello, but realistically I'm not going to get that many chances there.
"I didn't have any hesitations coming back. Scunthorpe have been good to me and everyone has been really nice. I'm pleased to be here."