Benfica coach Rui Vitoria has said he is confident the club has the resources to cope if reported Manchester United target Victor Lindelof leaves in the January window.
Morgan Schneiderlin and Memphis Depay have been linked heavily with moves away from Old Trafford after failing to make any impression on Mourinho since his arrival in the summer.
The 22-year-old, who can play at right-back or in central defence, has been watched by Jose Mourinho's scouts all season and is destined to join the Red Devils when the winter market opens.
But the 23-year-old insists he is not thinking about a potential switch to Jose Mourinho's side.
United had initially hoped to wrap up the signing of the Sweden global for £38million, but Jose Mourinho is still keen on Lindelof with Eric Bailly set to depart for the African Cup of Nations. He added: "I'm completely focused on Benfica and I'm hoping to continue here for many years to come".
Benfica's defender Nelson Semedo (L) vies with Rio Ave's Brazilian midfielder Filipe Augusto during the Portuguese league football match SL Benfica vs Rio Ave FC at the Luz stadium in Lisbon on December 21, 2016.
"You can rest easy", he said after their Taca de Liga win over Pacos de Ferreira on Thursday.
United scouted the centre back extensively before opening negotiations with Benfica.
And former Sweden global Larsson is backing Lindelof to be a success at Old Trafford should he move to Manchester United in the January transfer window. The windfall for Vasteras could nearly see them make £10m if the new contract does go through and the player makes a move to one of the potential suitors for the alleged £50m.