Following the 3-1 defeat to West Brom, the Tigers currently occupy19th spot in the league table and are one of the favourites to suffer relegation this season.
"Can Samuel defend corners?" Phelan said after the defeat.
"But that's the least of my worries. We have to look to improve in certain situations. Every position at this moment is up for grabs.
"We've been trying to put things together and analyse other players to come in. And we're still trying.
"So if we can get some over the line then that would be great because everybody needs that bit of help."