7 Dele Alli: Tottenham Hotspur to Real Madrid – In January it was reported Real were keen to prise England wonderkid Alli away from Spurs for upwards of £50m. Considering he has continued to go from strength to strength in the months since then, and Daniel Levys excellent negotiation skills, it is hard to imagine the White Hart Lane club would accept anything less than £100m for Alli. Diego Costa: Chelsea to Tianjin Quanjin – The Blues rejected a £90m offer from Chinese Super League side Tianjin in January, but it is likely the CSL club will return for their man in the summer. Having rejected a £90m bid, it would not be a surprise to see Chelsea hold out for over £100m; they will know there is that much money in Chinese football. Antonio Conte has been linked with a number of strikers, and it does seem Costa will be departing Stamford Bridge soon. 7 Antoine Griezmann: Atletico Madrid to Manchester United – The Red Devils have long been linked with Atleti superstar Griezmann, and this is the summer in which the club are finally meant to get their man. The France attacker currently has an £85m release clause in his contract, though Atleti want to extend his deal and raise the clause to £130m before the end of the season. If that deal is signed, United will have to break the £100m-mark to capture a player Jose Mourinho is known to admire. Manchester United have been told to pay £118 million if they want to sign Kylian Mbappe from AS Monaco this summer.The France wonderkid has caught the attention of a number of Europe’s biggest clubs, and United have been the first to make a move – seeing a £71m bid rejected by ASM in recent days.If the Red Devils are going to prise Mbappe away from the Stade Louis II, they will have to break the existing transfer record – and surely make the 18-year-old the first ever £100m footballer.But even if Mbappe does not break that record, there are a number of other players who could be signed this summer for over £100m.talkSPORT take a look at seven candidates who could become the first ever £100m player. You can see them all by clicking the right arrow, above… 7 7 Gareth Bale: Real Madrid to Chelsea or Manchester United – Injury issues and a loss of form have seen Bale fall out of favour at the Bernabeu this season, and a return to the Premier League could be on the cards. Marca claim both Chelsea and Manchester United have shown interest in the Wales forward, with a £172m offer mooted. However, other reports have suggested Bale could sign a new Real contract before being sold, raising his release clause to an incredible £451 million! That wouldn’t just break the £100m barrier… it would blow any previous transfer out the water! Eden Hazard: Chelsea to Real Madrid – Given his fine form this season, it is no surprise Real want to sign Chelsea forward Hazard. The Belgian still has three years to run on his contract, and has made no noises about leaving Stamford Bridge. Considering Chelsea also have no desire to sell their star player, and Real bid would have to break the world transfer record. A plus-£100m bid seems incredibly likely from Zinedine Zidanes side. Kylian Mbappe: AS Monaco to Manchester United – Monaco will reportedly demand up to 140 million (£118m) for teenage wonderkid Mbappe this summer, amid interest from a selection of Europes biggest clubs. The France forward has burst onto the scene in fine fashion, excelling in both Ligue 1 and the Champions League, and Manchester United have reportedly already had a £71m bid rejected for him. Should Mbappe leave ASM this summer, he will surely break the £100m-mark. But which other players could become the first £100m footballer? Click the right arrow to find out 7 7 7 Marco Verratti: Paris Saint-Germain to Barcelona – Rated as one of the greatest midfield players in world football, it is no surprise Italys Verratti is being linked with Barcelona. The LaLiga club are still trying to replace Xavi, and with Andres Iniesta also aging some serious quality is needed in the middle of the park. Verratti could be that man, but Paris have no need to sell and Barca will surely need to break the bank for him. A bid passing £100m could definitely be on the cards.