Kai Havertz will play for Arsenal next season following the Germany international's £65million transfer from London rivals Chelsea.
Many Gunners fans are perplexed by the move due to his modest record at Stamford Bridge. The Blues paid £72m to sign Havertz from Bayer Leverkusen three years ago but he's scored just 19 goals and provided 10 assists in 91 Premier League appearances.
Havertz is a candidate for the flop category, with Chelsea taking a hit on their hefty investment. Yet he's not the first player to struggle at a so-called 'Big Six' club following a big move. A number of stars have failed to make the grade over the years.
