LibDems will be in a tight spot. They can potentially get votes from hardcore remain Labour voters (who think Corbyn isn't doing enough), or liberal (as opposed to conservative) Tories.
The problem is that appealing to one of these groups will be make them less appealing to the other. Most LibDem support comes from middle-class social-liberals, who would also be turned away if they went classical liberal to get Tory votes.
Weren't the centre party more like the Tories? They were a religious conservative party and nothing like what we call "centrism" in the UK.
But I guess they must have been centrists because the National Socialists were obviously the extreme left wing.
Jo Swinson's, "no coalitions" policy is hardly news either, nor is it going to lead to a Tory government. A confidence and supply agreement with Corbyn in exchange for anti-brexit policies is most likely. They'd probably block any attempt by Corbyn to "seize the means" or "eat the rich" but just attach a few liberal riders on his other policies to make it look like they are doing something.
Alligning with "liberal-Tory, call me Dave" Cameron almost destroyed the party and they would be crazy to try it again with a rabid right-winger like BoJo. I can't even see the LibDems doing even confidence and supply with the Tories since Boris is just not going to be proposing policies that LibDems can accept.