Takehiro Tomiyasu has admitted he does not like facing Gabriel Martinelli in Arsenal training because "he never stops".
Martinelli, 21, has established himself as one of Arsenal's most important players. The winger has scored seven Premier League goals this season to help Mikel Arteta's side go five points clear of Manchester City at the top of the table with a game in hand.
As a full-back, one of Tomiyasu's jobs in training is to mark Martinelli. That is not an easy task, as the Brazilian is regarded as one of the most exciting youngsters in the Premier League. Martinelli was even included in his country's squad for the World Cup in Qatar.
