#4 He can play as striker again
Rooney's diverse qualities have perhaps hindered him as much as they have helped him over the years. Upon his arrival, he was shunted around the pitch for the first few years to enable Ronaldo, Tevez and Berbatov feature on the same pitch. Then after Ronaldo's departure, there was a short spell when Rooney was the main man – and again Van Persie showed up. Few years later, read Ibrahimovic in place of Van Persie.
The efforts to reinvent him as a number 8 or number 6 have been admirable, but it is time to accept that the experiment failed. For all his qualities, Rooney simply isn't a midfielder by trade. Koeman has already provided insights into his plans, suggesting that Rooney will be played as a number 10 or in the forward line only.
31 isn't the best age to play 5 different positions in 5 different matches. Rooney needs to settle down with a fixed role in the team, and his move to Everton would enable him to do exactly that.