Timo Werner will have been disappointed to miss out on Germany's game against Turkey on Wednesday evening, suffering with flu-like symptoms. His last trip back yielded a goal against Spain in Berlin but there was nothing unusual about that. The forward also scored seven goals in his final eight appearances for RB Leipzig, underlining his status as one of the game's great goalscorers.
Four games into his Premier League journey with Chelsea, there have been glimpses of why Werner can be so dangerous. He has looked bright, particularly when winning a penalty against Brighton. There was also a fine strike to open the scoring in the Carabao Cup tie against Tottenham. But that first Premier League goal has eluded Werner thus far.
That is Werner's game, of course, and there have been signs of that already at Chelsea. He made the most high-intensity sprints of anyone on the pitch against Palace, just as he has in all four of his Premier League appearances so far. He gives Chelsea something different.
But there have been limited opportunities for Lampard's side to counter-attack so far. Werner is at his best on the transition but there was little hope of that against Palace. Instead, he found himself without space in which to run, playing a passing game instead.
Werner made 40 passes on Saturday, the same number that he made against West Brom. It is an evolution in the player's game that was not there some years ago, as Julian Nagelsmann, the RB Leipzig coach who helped to facilitate this change, has explained.
"In the last few years, all his moments have come in transition, whereas now he has his moments in combination play, too. He's much more involved in our build-up play and combinations. He's having many more touches of the ball than in previous years and this new position has done his development good, playing in between the lines against teams who sit deep. That's another trait he'll need if he wants to be one of the best in Europe.
"There are a lot of teams who sit and defend deep against you and he needs that second way of being dangerous to opponents too, and he's definitely developed that this year."
It is to Werner's credit that he wants to add new weapons to his game - "that versatility has been a big part of my development and I want to keep getting better" - but Chelsea's principal reason for signing a player who scored 28 goals in the Bundesliga last season was surely to do what he does best. Finding a way to exploit those qualities is going to be key.
Werner scored more goals from fast breaks than any player in Germany last season. He was caught offside more than any other player too. Threatening the space in behind on the transition is where he can really hurt teams but Chelsea fans have not seen that yet. Expect him to be a factor against fellow top-six teams if his side can keep 11 men on the pitch.
Whether Abraham is the right foil for Werner remains to be seen. There was one moment in the first half against Palace when the England striker unselfishly tried to shovel the ball on towards his team-mate only to get it all wrong. They were making the same run anyway.
Werner might be better served by a centre-forward who can drop deep, drawing out defenders in order to allow him space in which to move. That left channel in a 4-3-3 is proving a profitable one for Sadio Mane and Heung-Min Son but Roberto Firmino and Harry Kane are both very different forwards to the target-man options at Lampard's disposal.
If there is a question mark over what to expect from Werner, and indeed Chelsea, this season, perhaps that is it. Will Lampard be able to find the right blend in his team that maximises the undoubted talent that he now has in his squad?
In the right environment, Werner has shown that he can be devastating. The challenge now is for Chelsea to create that environment.
Source: Sky Sports / Adam Bate