It appears that Everton have finally managed to find a suitable replacement for Idrissa Gueye following Allan's chart-topping opening to the season.
Before his deserved move to Paris Saint-Germain, Gueye offered a sturdy, immovable screen in front of Everton's defensive unit.
The Senegalese midfielder was regularly seen chomping into tackles and recovering possession with his impeccable ability to read the game.
In his final season at Everton he averaged 4.3 tackles and 2.2 interceptions per game in the Premier League, and his departure left the club with some huge boots to fill.
Jean-Philippe Gbamin had all the hallmarks of a Gueye replacement but an injury nightmare has left him on the side line for more than twelve months.
However, by virtue of Carlo Ancelotti's allure, the Toffees appear to have found their next defensive midfield general.
Despite receiving interest from Champions League contenders Atletico Madrid, Allan eventually opted to move to Goodison Park in order to reunite with Ancelotti, who managed the Brazil international during his time at Napoli.
And how Everton will be grateful for the Italian's influence in the transfer market.
While his performances may slightly have been overshadowed by the impact of the mercurial James Rodriguez, the 29-year-old virtuoso has immediately settled into his new surroundings and showcased his Champions League standard quality at the base of midfield.
Allan plays with a level of assurance and grace that is normally associated with players on the red half of Merseyside. Though that admission may irk some Evertonians, equally it is indicative of the direction in which the club could be heading under the Italian's tutelage.
Ancelotti has started Allan in seven Premier League fixtures so far this season, and the midfielder has proven himself to be a trustworthy midfield metronome with a passing success rate of 88.8%.
But it is out of possession where Allan has really excelled. In terms of tackles completed, Allan tops the charts in the Premier League with an average of 4.6 per game, per Whoscored.
Crystal Palace's Tyrick Mitchell and Southampton's Oriol Romeu follow his lead with 4 and 3.9 tackles respectively.
Though there are certainly more strings to his bow, Allan's ability to dominate in the tackle has re-installed bite into Everton's midfield and finally filled the space once occupied by Gueye.
When Gbamin returns it will be interesting to see if Ancelotti is willing to pair the Ivory Coast international alongside the recruit from Napoli in a more classic 4-2-3-1 formation, providing Everton's collection of flair players with greater freedom to slice open the opposition in the final-third.
For now, though, Allan's glowing relationship with Ancelotti, the man he calls "The professor", looks to have facilitated a game changing summer signing for the Toffees.