2. Erik Lamela (Roma)
The most expensive option on this list is another Roma player - Argentinian international Erik Lamela. Lamela is a 21 year old forward who has scored 19 goals in 62 competitive games for Roma - around 1 in every 3 - while he has 2 caps for his country and is yet to score. Last season was his most productive to date at club level - he scored 15 times in 30 league starts - and it is reported that he would cost anywhere between
£26m and a whopping
£30m. Lamela cost Roma around
£10m, plus add-ons, when he signed from Argentinian side River Plater in 2011.