The boss look ahead to this weekend's Cup clash
Millwall manager Neil Harris admits The Lions won't have the luxury of flying under the radar in Sunday's Emirates FA Cup Fourth Round tie against Watford.
"The Hornets won't underestimate us," Harris told millwallfc.co.uk. "If there was any chance that we caught our last opponents by surprise, that won't happen again."
The Lions produced one of the upsets of the Third Round with a 3-0 lashing of Premier League side AFC Bournemouth earlier this month.
And although the fixture will be played at The Den, Harris believes the pressure will be squarely on "the big boys" in front of a national audience.
"It's an opportunity for my players to test themselves. This time we are playing one of the big Premier League boys on national TV," he added.
"I don't think my players will be under pressure because I have told them to go out and enjoy themselves. We are seeing this as a free hit and an opportunity to cause Watford some problems.
"The beauty of the Emirates FA Cup is we have a chance to cause an upset and that's why people from all over the country will be watching."
Tickets are on sale right up to kick-off (12noon) on Sunday. Click here for prices and further info.
Tweets by @MillwallFC