Gomez is a right back converted center back. Even though he did well the first half of the season, he is not a better individual defender than Lindelöf or Smalling. He just complemented Van Dijk well, who seem to turn average defenders like Matip, loveren and Gomez into decent/good ones. I even believe Tuanzebe would have done as good as Gomez if he played in the Liverpool system.
Becker had only one season at the top. when he can consistently have multiple good season like De Gea then there can be more credibility added to his ability. De Gea was also only poor towards the end of last season. Alison has never had a game like De Gea had against Spurs last season. Robertson is good going forward, but not as strong defending as is Shaw.
Nevertheless, we will have to wait and see what happens next season. I don’t believe any United fan would rather have Liverpool center back option minus Van Dijk. I rather have Smalling, Lindelöf, Tuanzebe, Bailly and Jones over Matip, Lovern and Gomez.