He most likely will.
This agreement signing happened in Barbados as Norway has been convening Maduro's representatives and the opposition. U.S. officials were also in Barbados for the signing. But the agreement doesn't have a mechanism for reversing bans on political candidates.
The opposition seems to be unified behind Maria Machado but she has been banned by the Venezuelan courts, stuffed with Chavismo allies, from running. So...
Also, U.S. officials have been talking to the Venezuelans in Qatar about allowing more foreign oil companies to come in so Venezuela can finance debt repayments if Maduro continues talks with the opposition.
Why would the u.s put in writing on reverse on political candidates? You should know the consequences if Madoro breaks the agreement