Sequels are almost never great—just ask the major Hollywood studios who have often found themselves stung with a dud.
There is the odd exception, of course: The Godfather: Part II, Die Hard 2, The Dark Knight, Before Sunset.
It's an impressive list but not extensive. For every success, there are plenty of a horrible failures often owing to the story having already been told. It's had its time, played itself out, ran its course.
Should Chelsea re-sign Didier Drogba?
It needs to step aside, give the the new generation a chance to cement greatness.
BBC Sport reports the Blues legend could return to Stamford Bridge as early as this week on a one-year contract, bolstering the club's front line.
It would mean the Ivorian playing second fiddle to the likes of Diego Costa and Fernando Torres, but with his experience, the theory is that his presence will be of enough influence to justify a homecoming ceremony.
This is Didier Drogba, though. He's the man who went out at the top, and he deserves better than that, doesn't he? It's why comparing his return to movie sequels is so apt.
Had Martin Scorsese or Steven Spielberg been directing Drogba's story, the movie would have ended with his penalty in the Champions League final that secured a first European Cup success for Chelsea.
Cue the montage of celebrations, the cup being lifted, Drogba's Rocky moment as Adrian runs onto the pitch to tell him she loves him.
Like any idealistic moment in cinema, Drogba had sailed off into the sunset a hero, holding the elixir. His journey at Chelsea was complete.
Nobody really wants to see what happens next, as it's irrelevant, almost always a cheap imitation. Besides, where does the director take the story from there?
It's like Grease 2 without John Travolta and Olivia Newton-John or Blues Brothers 2000 when Dan Aykroyd was, well, past it and John Belushi's death ruled him out of his supporting role.
The Drogba that Chelsea are signing now isn't the Drogba of 10 years ago—he's not even the Drogba of two years ago.
Since departing Stamford Bridge, he has endured an unfulfilling spell in China with Shanghai Shenhua before 18 months with Galatasaray.
It was with the latter that he lined up against Chelsea in the Champions League last term, and stage freight or not, his performances in Istanbul and London made it clear his powers had waned somewhat.
We saw a different Drogba, one who may be able to to cause panic for 15 minutes in matches and at various stages of the season, but a man who can no longer cut it in the same way he did in his prime.
That's fine for some, but when you come with the reputation he has in west London, it tarnishes the legend.
As a stand-alone movie, Teen Wolf Too may do just enough to keep an audience entertained to pass as fun entertainment. Yet when you know how good the original was, it makes it much more difficult to accept.
From waving goodbye to Drogba in Munich and celebrating a man who had come to personify everything that has made Chelsea the club it's become this past decade, fans will be forced to watch him frequently warming the bench.
I love Drogba, really I do. How could you not? But he left on the highest possible high, and to return now at 36 would ruin that.— Joe Krishnan (@joekrishnan) July 20, 2014
Every week, he'll be restricted to cameo roles, being transformed from greatness to an impact player.
Nobody wants to see that for Drogba, but at 36, that's his role these days. Let him do it at another club, just not Chelsea.
Garry Hayes is Bleacher Report's lead Chelsea correspondent. Follow him on Twitter @garryhayes