Barca hope to compete with Prem duo for Bundesliga midfield pair.
The Catalan giants are set to see their FIFA-imposed transfer ban end this winter, and will be keen to improve a struggling squad that has made a poor start to the new season.
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According to latest speculation, midfield could be a priority, with these two linked with the Nou Camp in the last few days:
1) Ilkay Gundogan (Borussia Dortmund)
Linked several times with Manchester United, Ilkay Gundogan is now believed to be a top transfer target for Barcelona this January, with Luis Enrique keen to replace the injured Rafinha in midfield.