The 18-year-old, who has represented Scotland at under-17, 16, and 15 level, made five substitute appearances for the Paisley side in their 2009/10 SPL campaign, making his debut against Falkirk aged just 16.
But the highly-rated youngster, pictured, was surprisingly released by Ton's Renfrewshire rivals at the end of last season.
And Laird revealed he had to beat off competition from rival suitors to clinch Ramsay's signature. He said: "We've signed Conor on a one-year contract and it's a massive coup for the Morton youth set-up.
"He had the chance to go on trial with Kilmarnock, while Ayr United had offered him a two-year contract, so we're absolutely delighted to have signed him.
"We had him down at training and then took him for a look around Cappielow on Saturday, and I think he was quite impressed.
"Allan Moore had a word with him while he was there, as did another of our recent signings from St Mirren, Creag Little. We've signed him to play with the under-19s primarily, but the door is always open for him to get involved with the first team with Allan.
"He's already seen that direct line to the first team with Creag, who we signed but who hasn't trained with us yet because he's been with the first team since they started.
"He also got 90 minutes in the bounce game with Hibs. So Conor knows if he does well, there is a chance for him to get involved with the first team here."