Lee calls for calm as Nielsen joins pack.
A run of six home wins has catapulted Wolves to the edge of the play-off zone, level on points with sixth-placed Huddersfield Town.
But Lee, who will today unveil Tottenham midfielder Allan Nielsen as his new loan signing, is anxious that there is no repeat of the fracas which exploded near the end of Tuesday's 2-0 Molineux victory over Crewe Alexandra.
More than a dozen players from either side were involved in a melee on the half-way line after Crewe striker Paul Tait's crude challenge on midfielder Carl Robinson.
Only Tait was booked once order had been restored, but Lee intends to stress to his players the importance of steering clear of such flare-ups during the closing weeks of the season.
'I will remind the players that they need to be aware of getting into unnecessary problems.
'Every club has a duty to make sure players don't get involved in that kind of trouble. No-one is going to gain anything from that sort of thing.
'We have eight games left and the last thing we want is for someone to be sent off.'
Wolves have already been hit by a suspension which has forced striker Ade Akinbiyi to miss the last three matches, with the possibility of further action from the FA hanging over the club's leading scorer.
Nielsen's arrival, meanwhile, will give Wolves extra attacking options in midfield. The 29-year-old Dane has been unable to command a place at White Hart Lane but was their match winner in last year's Worthington Cup final.
Lee has also been boosted by the fact that long-term injury victims Simon Osborn and George Ndah are on their way back to senior action.
Ndah, sidelined by a broken leg since the end of October, has been given the all-clear to resume full training, while Osborn has been pencilled in for a reserve match at Grimsby Town on Tuesday.
Welsh defender Adrian Williams has returned to Reading on loan until the end of the season, having recently spent a month with the Berkshire club.
Walsall have three players battling to be fit for Saturday's visit to Tranmere Rovers as they paid a heavy price for Tuesday's crucial 2-1 victory away to fellow strugglers Port Vale.
Full-back Diego Padula has an ankle injury, skipper Adrian Viveash bruised his leg and Chris Marsh had a recurrence of the Achilles tendon problem which had kept him out for five weeks.
'It looked as if we had started to get clear of injuries, but we suddenly have a few problems again,' said manager Ray Graydon. 'We will need to check them all out before deciding anything about Saturday.'
Striker Andy Rammell, though, has recovered from his calf strain and could be included in the squad at Prenton Park.
Graydon considered putting him on the bench on Tuesday, but was guided by medical reports which suggested his calf needs further strengthening.
'I didn't want him to break down,' Graydon said. 'But he might be involved on Saturday.'
Striker Jamie Forester, who joined Walsall from Dutch club Utrecht in January, has moved to Northampton Town on loan until the end of the season.