 This also leads to teams signing their own players to long-term contracts before they are eligible for restricted free agency, possibly locking them in at a lower rate than they will have to pay later, depending on each player's future performance; contracts cannot be renegotiated under the current CBA.A potential benefit to a player whose current team matches an offer sheet is that the player cannot be traded for the next calendar year.Since the 2004-05 lockout, seven restricted free agents have signed offer sheets, and only one player has changed teams as the result of an offer sheet