With the summer transfer window now open, Goal takes a look at some of the big names who could be making a move

Getty ImagesToby Alderweireld | Tottenham | DefenderToby Alderweireld's time at Tottenham looks set to end this summer and there are a number of clubs said to be keen on his signature. Manchester United are eager to strengthen their backline and Alderweireld is one of a number of candidates for the role. Goal understands the two sides have agreed a deal, but Spurs want to have a replacement in hand before letting him leave. AdvertisementMatthias Hangst/Bongarts/Getty ImagesLeon Bailey | Bayer Leverkusen | ForwardLeon Bailey has been a key member of the Bayer Leverkusen squad since joining from Genk in 2016 and, despite being just 20, has carved out a reputation as one of the brightest prospects in the Bundesliga. The Jamaican forward’s displays have unsurprisingly attracted attention from some of Europe’s bigger clubs, with the player confirming "concrete interest" from Premier League duo Liverpool and Chelsea along with Serie A side Roma. Getty ImagesGareth Bale | Real Madrid | ForwardGareth Bale has won a Liga title and three Champions Leagues during his time at Real Madrid, scoring plenty of important goals for the Blancos over the course of four seasons. However, due to injuries and poor form, he has been in and out of the team in 2017-18, leading to suggestions that he may be nearing an exit. Bale is valued by the club president Florentino Perez, but did not appear to figure prominently in Zinedine Zidane’s plans. However, the Frenchman's exit may have changed all that. Bale has been a star for Madrid in pre-season, and while Manchester United were reportedly convinced that he would sign with the club before the World Cup, rumours linking the former Spurs man with a move away have died down since Madrid lost Cristiano Ronaldo to Juventus. Getty ImagesMichy Batshuayi | Chelsea | ForwardHaving joined Borussia Dortmund on loan from Chelsea for the second half of the season, Michy Batshuayi has reinvigorated his career and the Bundesliga club are keen to make the move permanent. The Belgium international scored nine goals in 14 games in all competitions for BVB, including seven in 10 Bundesliga appearances before an ankle injury brought an end to his season. Goal understands that Sevilla are in pole position to land the forward on loan, however, with Atletico Madrid and Valencia also interested in the Belgian.