The first question I would ask is, will he improve the team? Since he will be competing with McGeady for a starting spot, then I would say yes, he is going to improve the team.
The second question is, can we afford him? At the price mentioned, yes we can afford him.
So why are people still not happy?
Because Martinez told us to become more ambitious,
and many so-called Everton fans became more ambitious than him.
They think we could sign world class player.
They think we could get at least a championship within 2-3 seasons.
They think the progress in this transfer window is too slow. (And it is only mid-June! Also, many players are on holiday/International Duty)
They think 28 years old Payet/ Lennon is too old.
They think Del boy is too selfish.
They think Martinez could take us to relegation because his record of Wigan.
They think the fixture of 2015-16 is too tough.
These are what i saw on facebook. Unhappy for everything.