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Chelsea will have to part with £80m to sign Monaco striker Radamel Falcao, 27, or offer Fernando Torres or Demba Ba in part-exchange.
Arsenal and Manchester United are on alert after Borussia Dortmund chief executive Hans-Joachim Watzke said midfielder Ilkay Gundogan, 23, could leave the club.
Real Madrid have made Liverpool striker Luis Suarez, 26, their top priority in the transfer market amid interest from Arsenal for their striker Karim Benzema, 25.
Liverpool are weighing up a move for Fenerbahce left-back Caner Erkin, 25, as Reds manager Brendan Rodgers seeks to reinforce his defensive options.
Porto want to sign Manchester United midfielder Anderson, 25, on loan in January. United bought the Brazilian from Porto for £24m in 2007.
Arsenal have been warned off a January move for Real Madrid's Alvaro Morata, 21, but manager Carlo Ancelotti hinted the striker may be available in the summer.
Everton boss Roberto Martinez is lining up a pre-contract agreement for former Celtic winger Aiden McGeady, 27, who is set to leave Spartak Moscow.
Arsenal goalkeeper Lukasz Fabianski, 28, is considering January move to Bundesliga side Schalke.
Athletic Bilbao's 24-year-old midfielder Ander Herrera, a transfer target of Manchester United, insists he is staying at the Spanish club.
Arsenal are interested in signing Standard Liege striker Michy Batshuayi, 20.
Porto want Tottenham boss Andre Villas-Boas, the man who led them to an unbeaten season in 2010-11 and won four trophies, to return to the club to replace Paulo Fonseca.
It is thought Villas-Boas, 36, has been given seven games to convince the Tottenham board he is the man to take the club forward.
Meanwhile Spurs have banned a section of their own young fans known as the '1882' group from Block J at White Hart Lane after they moved on to the stairs and did not comply with various instructions and warnings, resulting in the club receiving a warning from their local council. The club plans to re-site the fans behind the goal.
Coach Roy Hodgson has told England fans to bet on his team winning the World Cup, but only £10.
Aston Villa's Fabian Delph is tipping his 27-year-old team-mate Gabriel Agbonlahor to play his way into Hodgson's World Cup squad.
Paramedics dashed to the home of Manchester United's Japan international midfielder Shinji Kagawa, 24, when he was stricken by breathing problems hours after the champions lost to Everton on Wednesday.
Arsenal midfielder Mikel Arteta, 31, has suggested that striker Nicklas Bendtner, 25, could yet play a part in the club's title challenge.
Manchester United midfielder Ryan Giggs, 40, insists "the gap is bridgeable" despite their 1-0 home defeat by Everton leaving them 12 points behind leaders Arsenal.
Tottenham's Brazilian midfielder Sandro, 24, is well renowned as being the team's joker and intensified his claim by driving the team bus to Craven Cottage on Wednesday night.
Arsenal are suing a corporate box holder at the Emirates Stadium for £375,000 after an alleged bust up over unsliced bread.