Arsenal manager Arsene Wenger admits he could have to get "creative" in the transfer market to boost his midfield.
St. Johnstone manager Tommy Wright has said that he wants midfielder Murray Davidson to sign a new contract.
Aberdeen manager Craig Brown has wielded the axe after six players were told they do not have a future at the club beyond the end of the season.
Rory McArdle, Darren Mackie, Youl Mawene, Mohamed Chalali, Yoann Folly and Danny Uchechi will not be offered new deals and will leave Pittodrie when the current campaign is finished.
The Dons boss confirmed goalkeeper Jamie Langfield and Josh Magennis have been offered contract extensions to remain at the club, but admitted informing half a dozen players that their time is up was difficult.
Brown said: "It is never easy telling a player that his future lies elsewhere and it is one of the worst aspects of being a manager.
"I'd like to thank all of the guys who are moving on for their contribution, in particular Darren, who has been a fantastic servant to this club, and wish them all the very best for the future."
Chief executive Duncan Fraser added: "I'd like to echo Craig's comments, in particular regarding Darren, who has been a tremendous ambassador for this club for such a long time, with a first class attitude, both on and off the park."
Kari Arnason will also depart the Granite City after he rejected a new contract offer at the turn of the year, while Mark Reynolds, on loan from Sheffield Wednesday, will return to Hillsborough at the end of the season.