Barcelona could go head-to-head with the likes of Manchester United, Chelsea and Bayern Munich for the signing of Borussia Dortmund striker Robert Lewandowski.
The Poland international is not prepared to sign an extension on his current deal, which expires at the end of the season, and is subsequently free to negotiate with other clubs from January 1.
European champions Bayern Munich had appeared to have won the race for his signature, but Barcelona may pounce if they discover he does not have a pre-contract agreement in place with the Bundesliga leaders, according to Sport.
The 25-year-old is widely regarded as one of the best strikers in Europe, having scored 84 goals in 148 appearances for BVB since joining the club in 2010, and is on the radar of the biggest clubs on the continent.
Barcelona have enjoyed immense success in recent years with Lionel Messi as their centre-forward, but reports claim that new coach Tata Martino is keen to bring in a top-quality striker with more strength as a plan B.
Martino's predecessors, Pep Guadiola and Tito Vilanova, were both keen to satisfy Messi by playing him in a central position. But it's believed that Martino is considering the possibility of signing Lewandowski and shifting Messi back to the right flank, where he started his career, on occasions.