First day nerves affect everybody. Whether it be at school, work, or football team, the former world's highest paid player is no different, and why should he be?
Eto'o - as good as he may be - looked like he was trying too hard on Saturday against Everton.
They say money doesn't make you happy, and in some cases it can make you feel worse.
For Eto'o, sat in the changing room, his money that he earned in Russia must make him feel very lonely; the Chelsea fans aren't sure that they want him, they've been upset by the rejection of their Didier Drogba to-be; Romelu Lukaku.
Here we just have a man who is desperate to impress for his new club, it's not his fault that he was made the world's highest earner and he certainly hasn't demanded that kind of money at Stamford Bridge, although I'm sure he won't be in poverty...
Five years ago, the Premier League would have been chomping at the bit to see the former Barcelona superstar plying his trade in England. Many a chilly, mid-week winter night has been spent watching the Cameroonian international tearing up the Champions League.
But, roll the clock forward, and the crowds will be eager to bait an alleged has-been who tried to sink quietly into a small and desolate corner of Russia to finish his career upon a comfortable bed of cash.
However, if Eto'o had shown a similar lack of desire to compete, I'm sure he could have found a slightly warmer cash cow to milk in the Middle East.
For this Eto'o should be commended, at 32-years-old he has shown that he isn't concerned about putting in the graft on a cold Tuesday night in Hull.
On the pitch, possibly the best description of the man could be; a live-wire. The movement is still world class, the dribbling is still silky, and the eye for goal doesn't need laser surgery. With more time to adjust against lesser teams, the end product will come back.
Compared to his striking rivals at the Bridge, the Champions League winner is still ahead.
Fernando Torres has turned into an expensive shoe; for all of the polishing you may try, it still looks worn and ragged soon after, you want your money back but your too proud, and you've lost the receipt anyway, the car boot sale awaits further down the line.
There's also the forgotten man Demba Ba. The quick fix, bargain basket buy in January.
The Senegal striker barely gets a look-in under Jose Mourinho, maybe the boss in his second stint with the Blues can't let himself have success with a Rafael Benitez buy, the man who so cruelly robbed him of a Champions League medal with his beloved west Londoners.
Whatever the case, Eto'o still looks the best, and it won't be long before the goals flow and people can realise that life really does start in your 30s.
Just remember that old saying; form is temporary, class is permanent. When you have someone with class and mix that with a desire to succeed, it provides a potent and sweet-smelling concoction of potential success.
Chelsea might have had a slow-start this season, but only a fool would rule out a return of the Premier League trophy in May.
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