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Arsenal have been warned off Dundee United midfielder Ryan Gauld, 17, who has been dubbed the 'Scottish Lionel Messi'.
Barcelona are aiming to beat Manchester United, Chelsea and Tottenham to sign Inter Milan midfielder Fredy Guarin, 27.
Manchester United stalwart Patrice Evra's transfer back to Monaco could be back on, after they tried to sign their former 32-year-old left-back in the summer.
Manchester United's out-of-favour winger Wilfried Zaha, 21, has denied rumours he is not playing due to having a relationship with manager David Moyes's daughter.
Cruzeiro midfielder Everton Ribeiro, 24, has opened talks with Manchester United over a January transfer.
Spanish striker Alvaro Morata, 21, has refused to rule out a January loan move to Arsenal but insists he is happy at Real Madrid.
Chelsea want to keep midfielder Oriol Romeu, 22, who is impressing on loan at Valencia.
Arsenal keeper Lukasz Fabianski, 28, is a January target for German club Schalke.
Manchester City and Barcelona are both believed to be eyeing Real Sociedad and Chile goalkeeper Claudio Bravo, 30.
Manager Arsene Wenger is set to agree a three-year £24m deal to stay with Arsenal.
Manchester City defender Vincent Kompany, 27, has admitted he must avoid rushing back from injury in future.
Arsenal forward Theo Walcott, 24, says his team-mates have the belief this could be their year to win a trophy. The Gunners' last success was the 2005 FA Cup.
Chelsea manager Jose Mourinho believes 32-year-old defender John Terry can continue playing until he is 40 - just like Manchester United midfielder Ryan Giggs.