Previousclubs: Sevilla, Club Brugge, Atletico Junior (COL)
Position: Striker
National team: Colombia (33 caps, 13 goals)
Where did Bacca start his career?
He was born in the very north of Colombia to a poor family, and as a child he spent every afternoon playing on a dusty football pitch just one block from the house his parents still live in today - albeit with a few changes to make it, according to them, 'more comfortable'.
But he is yet to make a decision about his future and West Ham's failure to finish in the top four last year could be significant.
How does he play?
Goals have never been a problem for Bacca. In his 405-game career, the 29-year-old has scored 210 times.
He provides a threat with his pace and direct running which can make him difficult to defend against because you neither want to be too tight or too stood off him.
And his relentless work-rate means he is as useful with the ball as without.
What do they say about him?
AC Milan manager Montella: "He's a world-class player and it's hard to go without a player who guarantees you the goals that he does.
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