The fee matters. Reports suggest the deal is a club-record sale for Arsenal, and that gives the move a clear football and financial logic.
That combination is important. Martinelli remained an established name, but not an automatic starter. If a player of that profile is no longer central, a premium offer becomes difficult to ignore.
At his best, Martinelli brings direct running, aggressive pressing and pace in transition. He is a wide forward who can attack space early and stretch defensive lines, which is often the hardest profile to replace once it leaves a squad.
For Al Hilal, this looks like more than a marquee move.
The timing adds intrigue because Arsenal are already moving well domestically. Other reports say they are on maximum points and have yet to concede ahead of the weekend meeting with Chelsea. That means the team is functioning, but Martinelli’s exit still changes the depth and balance of the forward line.
The next question is simple: how Arsenal replace his pace and width, and how quickly Martinelli settles into life at Al Hilal. Both storylines should move fast from here.