The 39-year-old believes that even if injuries strike at Old Trafford in the next three months there are players capable of coming off the bench to continue United's impressive run of results.
He told reporters: "I think we had to have the concentration because we knew what happened against Everton last season. The performance wasn't important but I thought we played well.
"Now we just have to continue our good form. If we get the results, we'll be okay. We've got players on the bench and not even getting on the bench who would walk into a lot of other teams.
"I think we've got enough experience in there but you never take anything for granted. The strength of the squad should see us through."
The Welsh winger's goal against Everton kept his run of scoring in all 20 Premier League seasons alive.