If he comes, it is as a free. He only has to be better or more promising than the La Masia cbs/dcms to be worth giving it a try. Lenglet was just bought last year for 36 and Mina went for nearly that. Give the kid a look and keep doing business.
I for once would have nothing against Abidal and the board doing a bit of low-risk gambling by signing Todibo for free this upcoming summer although I consider it as a strange option at first glance.
My main problem is that I could very well see the board settling for that which would be unacceptable. In particular if Umtiti's knee problems are long-term as feared.
Piqué will be 32.5 years old when the next season begins. More slower than ever too. We cannot gamble when substituting such an important player that has been the backbone of our defense for such a long period of time. 11 years this summer.
So getting Todibo is not a problem on its own. It is what follows after that which I might consider as a problem or at least a worrying development.
Let us hope that Abidal has seen something special about this player 10 games into his senior career that others have difficulties with spotting. The thing that gives me hope that Abidal might have struck gold, is the fact that apparently other clubs are interested as well, in particular Juventus. However let us see.
It's the same story with Rabiot. If his transfer is not followed up by another midfielder (provided that Rakitic leaves as expected next summer and hopefully), I would consider it as a good business opportunity but if Rabiot is our version of De Jong, Ndombele and other very talented midfielders or our version of an world class and established midfielder, I would be less enthusiastic. It's all about the full picture, not bits of it.
Rabiot-Todibo-Rakitic is going to be our midfield next season
Don't give him too good ideas. In all seriousness, he is likely to leave the club this summer so we will hopefully never see such a monstrosity in action.