Everton have been an incredibly difficult side to work out this season.
Under Marco Silva, they looked absolutely terrible, heading towards the bottom of the table.
However, with Carlo Ancelotti at the helm, they've looked a completely different side, one capable of potentially challenging for Europe next term.
Though, some cracks are starting to appear in the Italian's methods at Goodison Park.
Before taking on Aston Villa on Thursday evening, they'd failed to win in their last three matches.
A 1-0 defeat to Spurs was followed up by a draw with Southampton and then a tough 3-0 loss to Wolves.
Those matches against the likes of Nuno Santo's men will be vitally important if the club are to take themselves to the next level. After all, Wolves are essentially the side who have replaced them in those Europa League places over the last couple of years.
Who the Toffees recruit in the summer will be incredibly vital to their chances of finishing in the European spots again.
One link that's refusing to go away, however, is that of Allan.
The Napoli midfielder who played under Ancelotti last season could move to Merseyside, but Marcel Brands will need more than €25m (£22.6m) - a sum of money the Serie A club rejected in January.
Though, a fresh update from journalist Pablo Paganini claims Everton have actually made an offer for the 29-year-old.
Napoli are keen not to undersell him which means Allan probably won't come cheap for Ancelotti.
GIVEMESPORT'S Matt Dawson says...
Everton's midfield has struggled this season in terms of quality and the fact Ancelotti had to rely on Anthony Gordon against Wolves sums it up.
Alongside Tom Davies and Gylfi Sigurdsson, their central areas have refused to offer much bulk and muscle.
However, the addition of Allan could put that issue to bed. He could, meanwhile, finally replace Idrissa Gueye.
The Senegal international departed for PSG in 2019 and there has been a gaping hole ever since.
Gueye was a superb player, capable of distributing the play and winning the ball back on a regular basis.
In his final campaign with Everton, the 30-year-old completed 84% of his passes but won a colossal 4.3 tackles per match.
Allan, on the other hand, is extremely similar.
The Brazilian has completed 87% of his passes this season while coming out on top of 2.8 tackles per match. In the Champions League, that tally was even better at 3.8.
His tireless attitude is simply supreme, being described as a player with "lung-busting work-rate" by journalist Alasdair Mackenzie.
Clearly, Everton are lacking players like that. Their top tackler is Djibril Sidibe on 3.4 and then he is followed by Lucas Digne on 2.2
If Ancelotti can improve that part of the pitch, they would surely be in a good position to finish in Europe next term.
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