It would not be unfair to suggest both Timo Werner and Hakim Ziyech have struggled to adapt to the Premier League.
Ziyech's creative importance to an exciting Ajax side under Erik ten Hag in the Eredivisie has been stifled by a more competitive and physically imposing league.
Werner's electric speed was perfect in the Bundesliga, where space was liberally shared due to a high pressing game has been suffocated, and the German's technical frailties have been exposed.
Whilst the Moroccan has started to show signs of adapting with good performances over the past month, Werner looks like a player nearing a swift return to Germany due to his lack of impact despite costing Chelsea nearly £50m in 2020.
Both should give Chelsea good reason to think carefully about seriously pursuing two linked attackers from different leagues in Antony from Ajax and Karim Adeyemi from RB Salzburg.
Not only Chelsea but a number of Premier League clubs are reportedly looking at the duo, who are both valued at £31m by TransferMarkt.
Antony, like Ziyech, is a right-winger who has thrived for Ajax this season, proving to be highly productive with 11 goals in 25 appearances. Netting two in the club's very successful Champions League group stage.
In a similar fashion, Adeyemi has shown a consistent end product across the frontline with 18 goals from 30 appearances. Proving an impressive performer in Salzburg's 1-1 draw with Bayern Munich, the club Adeyemi was released from in their Champions League knockout tie.
Whilst both are proving to be some of the standout youngsters in Europe this season, like Ziyech and Werner, certain elements need to be taken into context.
They are both playing for clubs that regularly dominate their domestic league, also stylistically ones that either offer the right space or physical level to excel.
Ajax is on course to win their 36th league title, whilst Salzburg is on course for an eighth successive Austrian league title.
Chelsea hasn't won a Premier League title since 2017 but still remain one of England's biggest hitters.
Tactically the Premier League can nullify foreign talents given the low-blocks top clubs are confronted with on a regular basis.
Few teams offer the kind of space necessary, and it is on those players to prove if they are good enough to adapt their game and work with less space.
It is also worth appreciating what Chelsea already have within the squad. Callum Hudson-Odoi has shown good quality this season from his favoured wide left spot, and his creative numbers are competing with some of the Premier League's best talent.
As WhoScored pointed out, only Bruno Fernandes (2.6) and Kevin De Bruyne (2.5) are averaging more key passes from open play per 90 than Callum Hudson-Odoi (2.3) in the Premier League this season.
These numbers are not that surprising, given Hudson-Odoi's continual involvement in starting Chelsea attacks from the left this season, even if he does not get the eventual assist. One of his best attributes is his precise passing in the final third and judging the tempo of an attack.
Hudson-Odoi has only played Premier League football, he has been harshly judged by the spotlight of it whilst other academy talents have got loans, or expensive additions from other leagues have been afforded excuses and patience with worse performances.
Antony and Adeyemi could prove to be great Premier League talents, but to make out it is a simple adaptation would be to ignore the clear evidence of the opposite in front of our eyes.
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