Goal selects the 15 best signings over the last two transfer windows, taking a player's price, performance, impact and sell-on value into account
Getty Images15Gabriel Martinelli | Ituano to Arsenal | £6m
When Arsenal signed Martinelli for £6 million ($8m) from Brazilian club Ituano in the summer, not much was expected immediately from the talented striker.
But the 18-year-old has impressed straight away, scoring 10 goals in all competitions to establish himself as a star of the future.
It has been revealed recently that Martinelli spent four trials at Manchester United but it was ultimately Arsenal who swooped in to make a deal.
AdvertisementGetty Images14Aaron Wan-Bissaka | Crystal Palace to Man Utd | £50m
Wan-Bissaka has settled in to become a crucial cog of Manchester United’s defence despite his hefty price tag.
The right-back joined the Red Devils from Crystal Palace in a deal worth £50m ($63m).
His 99 tackles ranks second in the English top flight and his most impressive performances have both come against Raheem Sterling in United’s league victories over Man City.
Josep Lago13Nabil Fekir | Lyon to Real Betis | €20m
Fekir made a surprise move from Lyon to Real Betis only 12 months after a dream transfer to Liverpool fell through because of a failed medical.
The France international joined Betis in a cut-price deal worth €20m (£18m/$22m) in the summer and has made a strong impression on La Liga.
Fekir has contributed seven goals and six assists to Betis' league campaign, which has the team currently sitting in 12th position.
Getty12Julian Brandt | Leverkusen to Dortmund | €25m
Borussia Dortmund signed Germany international Julian Brandt from Bayer Leverkusen for a relatively low fee of €25m (£22m/$28m).
The 23-year-old – who already has 31 caps for his nation – plays a midfield role for Dortmund which allows attacking players such as Jadon Sancho and Marco Reus to flourish.
Brandt has contributed three goals and three assists this season.