Yer ive had this before...either you've got to bit the bullet and build your team around your new signings or you could use the in game editor and change the players nationality or history so it fits. Hope this helps
http://www.fm-base.co.uk/forum/downloads.php?do=file&id=1095
Just played this match, even though I was on the losing side, I still think its the most thrilling Penalty Shootout ever! Im in my 4th season with Berwick now and sitting comfortably in the SPL!