Miles Addison has joined Blackpool on a month's loan from Bournemouth.
Bayern Munich defender Jerome Boateng turned down an offer to join Barcelona before the start of the current season.
Aberdeen have announced that goalkeeper Jamie Langfield has signed a new two-year contract.
The 32-year-old returned to first-team action this month after suffering a brain seizure last summer.
The former Dundee player joined Aberdeen in 2005 and has made 226 appearances for the club.