Tottenham Hotspur's Erik Lamela was arguably the biggest disappointment of all their summer additions last year.
Lamela joined in an influx of arrivals at White Hart Lane, which created a huge sense of anticipation before the season started.
However, as the campaign progressed it became more and more evident that Spurs' expensive summer outlay had not been worthwhile.
After losing Gareth Bale, the club set about trying to compensate for his loss by bringing in a host of top talent, but they failed to gel together.
Roberto Soldado, Nacer Chadli and Paulinho all had poor spells last season, but nobody struggled more than Lamela.
The Argentine joined Spurs to provide many of the qualities that Bale had provided the Lilywhites during his spell in North-London.
Lamela had proven to be a talented dribbler, a creative influence and a goalscoring midfielder when in Serie A with Roma, but he looked considerably off the pace in English football.
It caused concerns from Spurs supporters that their record-buy was set to be a flop, but the 22-year-old has had a point to prove this season and, with the bit between his teeth, he appears a resurgent star.
Tottenham's campaign so far has been a disappointment, but Lamela has benefited hugely from Mauricio Pochettino's arrival as manager and his displays so far have been a highlight.
Lamela's biggest test so far will come this weekend when the side take on Arsenal this weekend.
The jinking winger looked under-confident throughout the entirety of last season, but he will need to show that he can perform - even in a hostile atmosphere on Saturday.
He will also be in direct competition with a winger who has made a big impact for Spurs' rivals.
Arsenal's purchase of Alexis Sanchez this summer caused quite a stir and he has lived up to his billing so far with some dynamic performances for his new club.
Alex Oxlade-Chamberlain has revealed that Arsenal had to calm Sanchez down this week in training, as he was so pumped up for the weekend's match, and that is the desire and hunger that Lamela will need to match tomorrow.
If he does so he has already proven that he can be almost as big a threat as the former Barcelona man with his performances this season.
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Sanchez has rightfully taken acclaim for his showings so far in North-London, but Lamela is also making his critics eat their words and there actually isn't too much difference in the standard of the pair's performance.
Although the Chilean has opened his account for the season already, Lamela has been more successful whilst dribbling at opponents, possesses a greater passing accuracy and also has been more available to his teammates.
It is a notable turnaround for a player who went into this season low on form and morale.
Lamela is starting to prove exactly why Spurs parted with £30 million to secure his signature now and, if they are to pick up the victory tomorrow, they will need him to continue with his fine form.