ALLEN PARK — Detroit Lions safety Louis Delmas, who has played in just three games this season, had tests done on Monday on his left knee. He injured it in the third quarter on Sunday and didn’t return to the game.

  It was the same knee he had surgery on Aug. 7.

 “(Delmas) had some tests today, he’s day to day, he’s sore,’’ coach Jim Schwartz said on Monday. “I don’t know if I’d classify it as a reinjury, it’s a sore knee that’s been bothering him through training camp and the season.

“He’s a hard worker, a tough guy we’ll try to work through it,’’ Schwartz said at his Monday press conference.

  The knee has been a lingering problem for Delmas. Schwartz said the surgery was able to alleviate some of the pain.

  Schwartz had relatively good news on cornerbacks Jacob Lacey, who has missed two games with a concussion, and Drayton Florence who broke his arm in the game at San Francisco on Sept. 16.

 Both will return to the practice field this week.

 “We’ll see how he progresses from there,’’ Schwartz said of Lacey.

  Florence should be back at practice this week.

  “He’s moving around well and his arm is healed up, he’s not eligible to be back on the active roster for a couple of weeks,’’ Schwartz said.

  Florence had been placed on the injured reserve  designated to return list, a new category this season.

 Safety Amari Spievey suffered a concussion at Chicago a week ago.

 “It’s a little too early to tell with Spievey. He’s still got some hurdles to clear. Both of those guys (Lacey and Spievey) are doing well and on their way back,’’ Schwartz said. “It’s how long that will be and whether or not it will be this week. We’ll get a better feel for later in the week.’’

  In NFL news, the trade deadline has been pushed back from 4 p.m. Tuesday to 4 p.m. Thursday due to Hurricane Sandy.

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