Tottenham Hotspur have entered the race for an exciting Spanish defender, who is also on the wishlist of Lazio this summer.It appears that the first order of business at Spurs this summer is to strengthen their backline, particularly given the expected departure of Cristian Romero.Tottenham are expected to wrap up the free signings of Andy Robertson and Marcos Senesi, with both players set to bring plenty of Premier League experience to the Lilywhites’ defence.It has now emerged that De Zerbi’s men have turned their attention to a young, up-and-coming centre-back who is making a name for himself in Croatian football.Photo by Bo Amstrup / Ritzau Scanpix / AFP via Getty ImagesTottenham battling Lazio for Sergi Dominguez Alfredo Pedulla has revealed that Lazio had been working on a deal for Dinamo Zagreb’s Sergi Dominguez, who has been extremely impressive since his switch from Barcelona last summer.The Serie A club had expressed ‘strong interest’ and held ‘fruitful contacts’ regarding the 21-year-old, but they have now run into one problem.Over the last few hours, Tottenham have also entered the race to land Dominguez as they continue to rebuild their backline.It is claimed that after finalising an agreement with Senesi, the North Londoners have now set their sights on bringing the young Spaniard to Hotspur Way.Spurs can land Dominguez for a low feePedulla adds that there is talk of Lazio having offered around €4m-€5m (£3.4m-£4.3m) for the Barcelona academy graduate.However, he claims that Dinamo Zagreb are expected to demand at least three times that figure, and may also insist on a sell-on clause for Dominguez.Finally, Pedulla asserts that Tottenham have ‘started the engines’ on the transfer and are now maintaining direct contact with the Croatian club about a deal for the centre-back.READ MORE: Joao Palhinha wants Tottenham stay as Sporting Lisbon transfer rumours are rubbishedThe post Tottenham battle Lazio for Barcelona academy graduate after low £4.3m opening bid appeared first on Spurs Web.