If one thing teached us is that the midern game either has teams dig in and play the rare counter, wich is dangerous relegation type play, or modern high press with fast players all over. Having a 32 y old in pivotal position is bound to cause problems, just as our current slow dms have proved. Its a waste of time and money.
But also what the modern game teaches us footballers are playing longer and longer.
We wont know if its going to work until it happens. If his legs are gone, yes its a problem. Ifhe's still athletic and fit, which his appearances last season dont suggest he was overworked, it may be fine. I can appreciate your concern about it, but I'm taking the more positive outlook and just remembering "our midfield" is shocking.
One thing it wont be is a waste of money if its a loan. He's an improvement on Davies, Gbamin and Gomes put together. He's more useful than Allan, who I think has the mental abilities but has so little pace he cant do what he wants.