I was reading an article on mirror football. Then I came across the following sentences where would is used which I think should be in past simple. Even so, there should be the reason why they used "would" but I couldn’t figure out the rule applied for it.
His Old Trafford stint would last just 18 months before he was eventually deemed surplus to requirements and shipped out on loan to Serie A outfit Inter Milan.
over his year and a half in Manchester, Sanchez would make just 32 Premier League appearances - scoring three times.
I have given the link to the source so that you can understand the context. This is a very recent post. Sanchez has already played in Manchester and now everything is past. So why It should be "a past referring to the future"