For a list of confirmed transfers, check out the transfers page.
Visit our manager ins and outs page for a list of all the current bosses in the top five leagues in England and the Scottish Premiership.
Manchester United hope that a £40m offer for Bayern Munich midfielder Toni Kroos, 24, will be enough to tempt the Germany international away from the Bundesliga champions.
Belgium goalkeeper Thibaut Courtois, 21, is to announce next week whether his future lies at Chelsea or Atletico Madrid after spending this season on loan at the Spanish club.
Chelsea striker Romelu Lukaku, 20, is holding talks with Tottenham and current loan club Everton over a £20m summer move, his agent Christophe Henrotay has confirmed.
Manchester United's French left-back Patrice Evra, 32, is still undecided about his future with the club and could make a return to Italy, where he played from 1998-2000, if he leaves in the summer.
Manchester United and Manchester City have been put on alert after Barcelona's deal to sign Dinamo Zagreb's 17-year-old midfielder Alen Halilovic - dubbed the "new Lionel Messi" - was thrown into doubt by the Spanish champions' 14-month transfer ban.
Newcastle will face a battle with Juventus to land Lyon striker Alexandre Lacazette after the 22-year-old expressed his interest in a summer switch to the Serie A champions.
Manchester City defender Joleon Lescott, 31, will be offered a deal to join Turkish side Besiktas when his current contract expires at the end of the season.
Hamburg are set to sign on-loan Arsenal defender Johan Djourou, 27, on a permanent deal.
Tottenham fans can expect quality over quantity from their summer transfers according to chairman Daniel Levy, who says they will concentrate on a few signings to "strengthen key positions".
Crystal Palace boss Tony Pulis is lining up a bid for Bournemouth's 22-year-old defender Steve Cook in the summer.
Sunderland have not held talks over midfielder Seb Larsson's future since rejecting a January offer from another Premier League club for the Swedish international. The 28-year-old, linked with German side Borussia Monchengladbach and Serie A outfit Fiorentina, is out of contract in the summer.
Journalists from the Sun and the Daily Mirror have been denied accreditation by Bayern Munich for the Champions League quarter-final second-leg clash with Manchester United after publishing what the club describes as "insulting" headlines referring to midfielder Bastian Schweinsteiger's sending-off at Old Trafford.
Manchester United striker Wayne Rooney, 28, has denied he dived to get Schweinsteiger sent off on Tuesday, claiming the German had "gone in with his studs".
Former Chelsea star Ray Wilkins reckons striker Fernando Torres, 30, will be on his way out of Chelsea in the summer.
Fulham are preparing to sack boss Felix Magath just six weeks after he was appointed because he has alienated players with his training methods.
Magath believes striker Darren Bent can still play a big role in Fuham's bid for Premier League survival despite making just 10 starts this season and not featuring since a 3-1 defeat at Cardiff on 8 March.
West Brom midfielder James Morrison, 27, was backed by team-mates after he allegedly punched forward Saido Berahino, 20, for giving the ball away in the build-up to Cardiff's late equaliser in the 3-3 draw last Saturday.
England's Champions League clubs all insist they have acted within Fifa's guidelines over the transfer of young players into English football after Barcelona were banned for two transfer windows for breaching rules relating to signing under-18 players.
Manchester City striker Sergio Aguero, 25, says his team have the mental strength to repeat their 2012 Premier League triumph - which was sealed by the Argentine's injury-time goal against QPR.
Fifa secretary general Jerome Valcke has expressed a desire for an African team to reach the World Cup Final during a three-day seminar in Johannesburg, South Africa.
Senior Fifa official Michel D'Hooghe fears there will be trouble at this summer's World Cup following months of serious civil unrest across Brazil.
Hull City goalkeeper Allan McGregor, 31, is expected to leave hospital on Friday after five days under observation for kidney damage and three broken ribs.
Liverpool could face a Champions League group including Bayern Munich and Juventus next season as the five-time European Champions are languishing 32nd position in Uefa's co-efficient table after failure to qualify for the Champions League since 2009.
Italian side Napoli could make a bid for Manchester City's Martin Demichelis, 33, if the Premier League club decide to sell the Argentine defender this summer.
Boca Junior president Daniel Angelici is confident former Manchester United and Manchester City striker Carlos Tevez, 30, will return to the Argentine club after he leaves Italian giants Juventus.
Real Madrid are negotiating with Sevilla over Croatian midfielder Ivan Rakitic, 26, who already has an offer from Atletico Madrid.
Bayern Munich are hopeful of retaining Mario Mandzukic, 27, for another season, despite rumours linking the Croatian forward with a move to Chelsea in summer.
Standard Liege fans delayed the kick-off in the Belgian league play-off match against rivals Anderlecht with a toilet roll avalanche from the stands.
You can comment on the latest gossip on the BBC Sport Facebook page.