Manchester United finally lands new goalkeeper

Lammens, 23, should be a long-term addition to United. He will likely slide into the squad and become the keeper that Ruben Amorim attempts to build his defense around. 

Unlike Martinez, Lammens is still a player in development. He's far from a proven commodity, especially at Premier League standard, and will need time to acclimate to a new level of competition and play style. 

It's also worth noting that last season, which was Lammens' first as the full-time starting keeper for Antwerp, he allowed an average of 1.07 goals per game. 

He's started this season in a similar fashion, allowing a goal in each of his four outings. 

Over his 59 career games so far, Lammens has saved 140 of the 181 shots on target he's had to deal with. That gives him an 80.1 percent save rate. Not bad for a young keeper, and certainly an encouraging sign given his undoubted upside. 

Since joining Aston Villa, Martinez has produced similar numbers, allowing 226 goals from 641 shots on target over five seasons (and one game in his sixth season). That gives Martinez an 80.3 percent save rate. 

The only major difference is that Martinez's numbers come against Premier League quality opposition, while Lammens came in the Belgian Pro League A. 

Still, United has made its choice, opting for longevity, upside and likely fit with Amorim's vision. Now, Lammens will compete with Onana and Bayindir for a starting role in United's goal. Amorim would be wise to quickly choose his No.1 and stick with him moving forward.

Given the struggles of United's current keepers, it feels logical to expect Lammens to be given the opportunity to cement himself as the keeper to help United keep pushing forward with its rebuild.