Christian Eriksen and Jan Vertonghen
Vertonghen, Eriksen and Lamela are contracted to Tottenham Hotspur until the summer of 2018Getty

Tottenham are keen to tie down their key players to new deals ahead of next season and are confident of agreeing contracts with Jan Vertonghen, Christian Eriksen and Erik Lamela in the coming weeks. The trio are said to be happy at White Hart Lane and have made telling contributions to vault the north London club from being a top-four contender to a title challenger this campaign.

According to the London Evening Standard, the club have been working on extending the Denmark international's contract since the start of the campaign and are finally close to agreeing terms, which will see the midfielder receive a substantial increase from his current £30,000-a-week wage deal. The former Ajax midfielder has played a key role in their title chase and has been one of the players, who has featured in every Premier League game apart from the three at the start of the season due to injury. He has contributed six goals and 10 assists to help Spurs sit in second place, seven points behind leaders Leicester City with six games to remaining.

Jan Vertonghen was arguably one of Tottenham's best players until he was struck down by a knee injury in February this year and is yet to feature since. He had started every league game from the start of the season forming a brilliant partnership with compatriot and former Ajax teammate Toby Alderweireld, who has featured in every league game this season. The Belgium international is contracted to the club until the summer of 2018, but is set to be rewarded a new deal with improved terms to ward off suitors in the summer.

Lamela, meanwhile, was a player, who was on the verge of being sold this summer after two failed seasons at White Hart Lane following his club-record £30m ($45m) move from AS Roma in 2013. The Argentina international, however, has turned his fortunes around by become a regular starter under Mauricio Pochettino, contributing nine goals and six assists in all competitions, making it his best season for the club.

The Argentine midfielder is reportedly already one of the highest earners at the club, but will be rewarded for his important contributions this season, as Tottenham look to overhaul the Foxes in the final six games of the season to win their first English top-flight title in over five decades.