De Gea is a better alternative for Newcastle United. He is younger than Hugo Lloris and I think he is a better goalkeeper. But today Newcastle United urgently need a goalkeeper. So Hugo Lloris can also solve Newcastle United's problems. De Gea is not a mandatory alternative. But we have to say that what happened today was a planning error. Newcastle United's management should have foreseen this situation in advance and signed a well-qualified backup goalkeeper. I think we can see that they failed in this regard.
De Gea is only 3 years younger than Lloris, it's pointless for them to sign an old goalkeeper. There's no good goalkeeper out there, the current Tottenham goalkeeper which is Vicario is fine enough. They currently have 3 amateur goalkeepers, so they still have many substitute goalkeepers.
Tottenham need to find new defender since there are five injured defenders right now.
Since Romero returned from suspension already the defenders can cope, I don't think they'll have much difficulties with defending. Pedro Porro, Udogie Destiny and Romero can cope o make that defense coordinated.
Newcastle has put trust on their second choice goalkeeper Martin Dubravka, they'll want to get a backup goalkeeper still to avoid further issues within the next five months. Hugo Lloris seems like a better option to consider for the club. David De Gea might not want to go too far from his family, he should be considering a job around Spain and not so far from his family.