Substitution

[Nyjets]

During a dead ball interval, can A42 who was one of the eleven players who participated in the previous play, come off the field, get a drink of water, and go back to the huddle to participate in the next play? Isn't this a dead ball illegal substitution foul since the rule states no player may withdraw and reenter as a substitute during the same dead ball interval unless a penalty is accepted, a dead ball foul occurs, or a time out is taken? Your thoughts would be appreciated.