In total we will have had 26 PL games televised in the UK up to May. We are three short of the maximum 29 allowed, so all of our May games could be televised. The timing of the final one, being fixed, is not affected by this.
Notwithstanding any swaps the tv companies have done, it looks to me like Liverpool have used all of their tv quotas apart from package A (Sky Sat 12:30) and package C (Sky Sun 13:30/14:15).
If Liverpool drop more points over the next three weeks, we probably won't be televised at all in May. However, if we are still in with a shout for a Champions League place, I expect both our Southampton and West Ham games to be moved for tv.
Southampton have had a lot of Package C fixtures, probably filling their quota, and have not yet had their minimum of 1 game from Package A. Their two postponed games were also not originally picked for Package A as far as I can tell, so my money is on our game with them being brought forward to an early Saturday kick-off. (Their other two May fixtures are Stoke and Middlesbrough, so probably less attractive.)
It looks like West Ham have just the one Package C game up to May, and have not had their minimum of one from Package A yet, although that could well go to their derby with Spurs. Based on that, if we're chosen for tv, it's not possible to predict whether we will be the early Saturday or early Sunday.
[Worth noting that we have had a least one swap, because our Package D (Sky Sun 16:00/16:30) total is 6 rather than the maximum of 5, and the extra can't be from Package G (Sky Bank Hols, Sun 1:30/14:15, Sun 16:00/16:30) as that is already max'd out. I saw online speculation that our Burnley away game that was switched to a home is the rogue game that was swapped from a different package.]