Neil Harris insists the play-off tie with Bradford is “as tough as it gets”.

The Lions travel to Valley Parade on Sunday for the first leg of the semi-final, with the return fixture taking place at the Den the following Friday.

Millwall finished the regular season one point above the Bantams but failed to beat Phil Parkinson’s side in two league fixtures.

Harris said: “It’s as tough as it gets. You know what you get from Phil’s sides, but they know what to expect from us also.

“We had two tough games against them in the league with only one goal so it’s going to be tight.

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“It’s going to be aggressive and physical which only suits us I think.”

Harris’ side go into the play-offs on the back of four straight wins after Lee Gregory’s 98th-minute penalty clinched a last-gasp victory at Gillingham.

Gregory scored the winner at the Priestfield Stadium less than two weeks after undergoing surgery on a stomach muscle injury.

“What we have to remember is where the boy has come from since the start of the season,” Harris said.

“It took him time last year to find his feet and it took him time at the start of the season while playing with niggles, but then he really got into his rhythm scoring a lot of goals.

“He played for a period of time - I'd say probably about four or five weeks - in agony. It was testament to our medical department that Lee managed to play as long as he did.”

Harris added: “He never trained other than the odd day; he might come out on a Thursday to participate in a small section of the training session and the same on a Friday, but he continually put himself up to play.

“He came to see me and said he wanted to be involved [against Gillingham].

“Medical science might say he shouldn't have been and that it should have been next week, but it shows the boy's mentality.”

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