Van Gaal wasted no time spending over £150m in the summer, making it almost £200m spent in the last twelve months including the arrival of Juan Mata.
Angel di Maria, Radamel Falcao, Luke Shaw, Marcos Rojo, Daley Blind and Ander Herrera all arrived as Van Gaal revolutionised the squad and former midfielder Robson believes United are going in the right direction.
“Louis van Gaal’s signings have definitely improved us,” said Robson.
“You may say that with the money spent, it should do, but you look at Liverpool. They spent £100m last summer but haven’t improved one bit. They have gone backwards.
“You have to look at that and say the signings haven’t improved them. At least ours have helped us get better and we are back up there and not too far away.
“His signings have been really good. That is one of the main things to get right when you are a manager. You have to make sure your signings improve your squad and your team and Louis van Gaal is doing that.”
United’s new signings have certainly improved the squad strength from last season but thanks to a succession of injuries, Van Gaal still hasn’t been able to create his fixed starting XI and there are still some serious questions being asked about the shaky defence.
Although United have been linked with several players during the January window, Robson remains unsure whether United will sign anybody in January but feels they could be season changing signings if Van Gaal made the correct ones.
Robson added: “The manager might not make any signings in January because there may not be players who can improve us, but in the summer, if he buys players who can help us get better, then it might be like when people like Peter Schmeichel came in and then Eric Cantona.
“They were the last pieces in the jigsaw that made us better.
“He’s done the first bit bringing in a lot of players last summer and I like the character of the players he has brought in.
“They are making us better and then, in the summer, you might see some more as Van Gaal fine tunes things.
“I can definitely see that happening. We are not too far behind Chelsea and City now and United are only going to get better.”