Romelu Lukaku was always going to leave a big hole to fill at Everton but few would have predicted a combination of, say, Wayne Rooney and Olivier Giroud, perhaps to take over in the likely event of the Belgian striker’s departure.

Reported overtures to Arsenal’s Giroud make perfect sense; he is a reliable goalscorer, proven in the Premier League, at 30 he will have a few good years left in him and he was no longer a regular starter under Arsène Wenger. Those imagining Everton would seek a like-for-like replacement for Lukaku, as if similarly built striking powerhouses were in plentiful supply, might have to think again. Giroud, should he move to Merseyside, could be just the cutting edge required for the quick-passing side Ronald Koeman is looking to put together.

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Rooney is an entirely different story. Once upon a time, as Everton remember only too well, he brought a cutting edge like no other. He has also been spending too much time in the shadows at his present club and it is entirely understandable he should wish to seek more game minutes with his boyhood team, though there is a reason why Rooney dropped off the radar at Manchester United.

Whether used as a striker or a No10 in recent seasons, José Mourinho and before him Louis van Gaal found it difficult to incorporate the club captain into a system that worked. Mourinho actually began by saying he had complete faith in Rooney’s striking abilities and would resist the temptation to drop him back to midfield, though as the season wore on it became plain – not that the manager ever admitted it or said anything over-critical – that the solution he had come up with was to drop the player altogether.

At 31 Rooney is only a year older than Giroud – not to mention four years younger than Zlatan Ibrahimovic – though perhaps because he started out so young, his playing career seems to have caught up with him. Ibrahimovic stole all the goalscoring headlines at United last season, with Rooney barely getting a look-in, and whereas Giroud was also relegated to a substitute’s role at Arsenal he frequently came off the bench and made a scoring impact. Rooney’s impact in his last few seasons at United has been muted, to put it as kindly as possible, and for that reason it is tempting to wonder not only why Koeman wants him, when there will be money in the kitty after Lukaku’s departure, but also where he plans on playing him.

As a No10 seems most likely, if only as the most effective way of making it plain to Ross Barkley other options are available. At this rate the latest homegrown Everton wunderkind is going to be making way for the previous one, 13 years after the latter left Merseyside for Manchester. Though he has lost much of his pace, Rooney retains an eye for a pass and an ability to deliver from set pieces – witness his free-kick at Stoke last season to score his 250th Manchester United goal and break Sir Bobby Charlton’s record – yet Mourinho was also interested in speeding up the tempo of attacks and in the end he preferred Ander Herrera or Juan Mata.

It is highly debatable whether Rooney is a better bet as a creative playmaker than Barkley, even if there are problems with the younger player’s contract. Gylfi Sigurdsson of Swansea is another player Koeman admires for the same position, and were Everton to be in a position to land the Iceland international it is hard to know what role Rooney may be asked to fulfil.

Facebook Twitter Pinterest José Mourinho, like Louis van Gaal, has found it difficult to incorporate Wayne Rooney into a system that worked. Photograph: John Peters/Man Utd via Getty Images

On the other hand, Everton stand to acquire a lot of leadership, experience and club tradition on a free transfer, even if the wage bill is likely to make Bill Kenwright’s eyes water. It should also be remembered Everton are in Europe this season, and are quite likely to opt for a significantly different lineup in cup competitions than the one they use for Premier League games. There is no problem about animosity from present Everton supporters towards a player who turned his back on the club in search of fame, fortune and trophies. Everton fans know better than most how the world works, and the famous (infamous?) “Once a blue always a blue” slogan is already being revisited approvingly rather than sarcastically.

Lots of United players have ended up at Everton in recent seasons, from Phil Neville and Tim Howard to Tom Cleverley and Morgan Schneiderlin, and looked at in such a way it is perhaps natural a player should wish to extend his career in the North-west without joining rivals such as Manchester City or Liverpool.

Yet City and Liverpool would not have been interested in signing Rooney anyway, and Neville, Howard, Schneiderlin et al still had plenty of career years left to contribute. Not everyone can keep up the peak performances United demand for the whole of their careers, and Everton have proved a useful alternative without dropping down the league too far. In one sense Rooney fits into that category and in another he does not.

Rooney has already spent all his peak years at United, that is precisely the point. To the naked eye he appears to have none left, but maybe Koeman knows better. Let us all hope so, for a homecoming hero is always a tale worth telling and it will be good to see Rooney in blue again rather than in China or on the front pages through some sort of boredom-related bother. Only a killjoy or a spoilsport would add a word of warning to such a feelgood story, but it is only a year since Mourinho had complete faith in Rooney’s undimmed ability and so did Roy Hodgson. Neither found a happy ending.