That decision failed to pay off, however, with the Red Devils sacking Moyes after just 10 months in charge.

After the current West Ham boss came Van Gaal, who arrived with big things expected due to his past success at the likes of Barcelona and Ajax.

Giggs was hoping to get the Red Devils job himself, which was why he stayed, but both ended up leaving nearly six years ago.

When Jose Mourinho took over, he opted to maintain his close relationship with Rui Faria – who had previously worked under him at clubs such as Real Madrid and Chelsea.

Fair departed in the summer of 2018, though, with Michael Carrick then given a place on Mourinho’s bench.

Carrick stayed to work under Ole Gunnar Solskjaer, with the Norwegian also regularly picking up the thoughts of Phelan and Kieran McKenna throughout his spell in the dugout.

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“Though they’re commonly used to treat different forms of heart disease, beta-blockers can significantly reduce HDL levels.”

Among the beta-blockers that cause this are Corgard (nadolol), Inderal (propranolol), Tenormin (atenolol), Zebeta (bisoprolol).

These drugs are widely used in the treatment of angina, heart failure, atrial fibrillation, heart attack and high blood pressure.

But despite concerns about their effect on cholesterol, scientists stress that the benefits of beta-blockers far outweigh the risks.

VeryWell Health adds: “If your beta-blocker affects your cholesterol significantly, your doctor may lower your dose or switch you to a different medication.”

However, after a four-hour meeting between race officials and the teams, it was confirmed the race would go ahead despite the attack. It had been reported that a number of the competing drivers were concerned for their safety following the nearby explosion.

Despite this, an agreement was finally reached to race at 2:30am local time, after team chiefs left the lengthy meeting to confirm: “We will be racing.” A statement from Formula 1 confirmed Sunday’s race would go ahead as planned. It read: “Formula 1 has been in close contact with the relevant authorities following the situation that took place today. The authorities have confirmed that the event can continue as planned and we will remain in close contact with them and all the teams and closely monitor the situation.”

Unsurprisingly, there were a number of mixed views on whether the race should go ahead, and this is clearly apparent in the Red Bull setup. This comes after advisor Helmut Marko revealed that drivers Verstappen and Perez are not on the same page when it comes to racing.

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On the issue, Marko told Sky Germany: “Max is a bit more relaxed about it. Perez is a little bit scared, but when you live in Mexico City there’s not much more security. We have the pandemic, we have the war in Europe and now we have a missile attack 20 kilometres away. This is no longer normal or pleasant.”

Ahead of tomorrow’s race though, the Austrian advisor is firmly on the side of Verstappen and the race officials, supporting the idea of the race taking place. He commented: “I really think it’s the right thing to do. As I said, these drone attacks are common, I think. They have a very good defence system. Why this one didn’t work remains to be seen. It’s not the first drone, after all. But it’s the first one to strike on such a scale.”