Southampton have completed the signing of Sadio Mane from Red Bull Salzburg on a four-year deal.
The 22-year-old joined the Saints for a reported £10.8m to become the club's second deadline-day signing following the arrival of Toby Alderweireld from Atletico Madrid.
The Senegalese scored 45 times in a two-year spell with the Austrian champions, and Southampton boss Ronald Koeman hopes that Mane can replicate those feats on the South Coast.
Speaking to the club's official website, he said: "I know the player because last season Ajax Amsterdam played against Red Bull Salzburg in Europe, and I saw him playing and I was impressed with his qualities and with the physicality that he showed.
"He can play in different positions in the attack – he can play on the left or right side and also as a number nine. It is incredible how many goals he has scored from his position, and I hope that he will do the same for us.
"With the way that we play and the fact that I know him very well, this is a good step forward for him."
Mane has earned 15 caps for Senegal, scoring three times.